Mary Hamilton (Arrowverse: Earth-1)

Dr **Mary Hamilton**, also known as **Poison Ivy 2.0**, is a meta-human; who possesses arborgenesis, arborkinesis, cerebrokinesis, feromonikinesis, life-force energy absorption, telepathy and superhuman senses.

Mary is a doctor, a member of the Bat team, a former medical student of Gotham University, and the owner of the Hold Up and the Medical clinic.

Mary is a resident of Gotham City.

Mary is also the estranged daughter of the late Catherine Hamilton, the step-daughter of Jacob Kane, the estranged step-sister of Kate Kane and Beth Kane, and the step-cousin of Bruce Wayne.

## Biography

### Early life

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### Batwoman

#### "Pilot"

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#### "Rabbit hole"

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#### "Down, down, down"

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#### "Who are you"

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#### "Mine is a long and sad tale"

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#### "I'll be judge, i'll be jury"

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#### "Tell me the truth"

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#### "A mad tea-party"

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#### "How queer everything is today"

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#### "An un-birthday present"

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#### "Take your choice"

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#### "Drink me"

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#### "Grinning from Ear to Ear"

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#### "Off; with her head"

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#### "Through the Looking-glass"

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#### "A narrow escape"

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#### "If you believe in me, i'll believe in you"

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#### "A secret kept from all the rest"

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#### "O, Mouse"

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#### "Whatever happened to Kate Kane"

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#### "Prior criminal history"

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#### "Bat girl magic"

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#### "Fair skin, blue eyes"

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#### "Gore on canvas"

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#### "Do not resuscitate"

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#### "It's best you stop digging"

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#### "Survived much worse"

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#### "Rule #1"

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#### "Time off for good behavior"

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#### "Arrive alive"

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#### "Initiate self-destruct"

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#### "I'll give you a clue"

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#### "And justice for all"

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#### "Armed and dangerous"

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#### "Rebirth"

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#### "Kane, Kate"

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#### "Power"

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#### "Mad as a Hatter"

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#### "Loose tooth"

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#### "Freeze"

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#### "Antifreeze"

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#### "A lesson from Professor Pyg"

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#### "How does your garden grow"

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#### "Pick your poison"

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#### "Trust destiny"

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#### "Meet your maker"

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#### "Toxic"

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#### "Broken toys"

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#### "We're all mad here"

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#### "We having fun yet"

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## Personality

* As a civilian
* As Poison Ivy 2.0
* Reformed personality

Mary is very friendly, excitable, talkative and kind of a social butterfly, as she is described as her step-sister, Kate Kane's polar opposite; with one of Kate's trainers dubbing her as "girl; who talks too much". Despite coming off as a ditzy socialite, Mary is a very kind-hearted individual; who will go to any lengths to help those that; she loves and the individuals that; are in need; such as Gotham's underserved communities.

Mary; even lashed out at Luke Fox over how Kate still favored a serial killer over her, despite all her best efforts to be a good sister and began questioning Kate's love for their family, after she refused to talk to Mary; since she had "work to do"; when their parents were about to divorce. But even; when the two of them are at odds, Mary is extremely quick to forgive Kate. When Kate finally confessed to having always loved Mary like a real sister and apologized for sidelining her in the past, Mary was so moved that she was unable to reply and simply embraced Kate.

Mary is also quite empathetic and sensitive; for example, she was horrified after discovering that; her mother, Catherine Hamilton had manipulated the dna test on Beth's alleged remains; in order to gave Jacob Kane and Kate closure, having a very hard time forgiving Catherine for this deception. Mary felt great sorrow; when her mother and step-father were about to divorce, and devastated for being unable to reach and act more sisterly; with Kate. Also, despite her animosity towards Beth, Mary came to befriend Earth-TUD14 Beth after realizing that; she was nothing like the former. Mary further demonstrated these traits, as well as an impressive stoicism; when choosing not to leave her clinic during a bomb alert in order to stay with her patients; who were too weak to be evacuated or when putting her own life in jeopardy; in order to save her step-sister and Julia Pennyworth.

Mary is; proven to be quite an assertive, free-spirited and inquisitive individual, not bothering about being politically correct; when questioning Sophie Moore's sexuality or discussing her past relationship; with Kate and the impact it had on her.

After Mary's mother, Catherine's death, she greatly matured, taking full charge of her step-father, Jacob's trial to; prove his innocence in Catherine's murder. But in her grief Mary also became much more withdrawn, considering shutting down all of her social media accounts and even closing her free clinic, feeling that; she couldn't be a good doctor; when she was unable to save her own mother. But Mary eventually managed to overcome her grief and decided to continue her path of being a doctor and influencer; keeping both her clinic and social media accounts open.

Mary was also; proven to have a strong relationship; with her step-father, Jacob as he was possibly the only father-figure in her life. Even though she loved her step-father, Mary knew that; Jacob would never become allies; with Batwoman; due his (unjustified) hatred towards vigilantes in general and after Jacob tried to kill Kate (under the persona of Batwoman at the time) Mary was saddened; by her step-father's actions. Yet, despite Jacob trying to kill Kate earlier, Mary provided her step-father emotional support as the latter became so guilt-ridden over his actions and desperately started searching for Kate after she had disappeared. But; when Jacob discovered and shut down her secret clinic, Mary became angry at her step-father for not only closing down the clinic and for believing that; she would become like her mother, but for taking away the very thing she enjoys doing; helping other individuals.

After being infected; by one of Pamela Isley's vines, Mary's personality has become far more darker; to the point of becoming extremely cold, cruel, ruthless, sadistic, spiteful and vindictive; for example, she tried to suffocate Chris Hayner to death; who Mary had hoped to go on a date; via a dating app. Mary's extreme reaction stemmed from Chris simple rejecting her, as she did not handle rejection very well.

Mary does not take being ignored and neglected very well; for example, she utilized her vines to break her friend, Luke Fox's left arm and then utilized them in attempt to suffocate her best friend, Ryan Wilder to death for repeatedly ignoring and neglecting her.

Due to being ignored and neglected; by Luke and Ryan respectively; Mary has become extremely lonely; for example, she was reluctant to remove the tracking nanobots from step-sister, Beth Kane's bloodstream as Mary believed that; Beth would abandoned her the moment after she removes the tracking nanobots from her bloodstream. But after removing the tracking nanobots from Beth's bloodstream, this fear of hers has completely disappeared; when Beth didn't abandon Mary; even; when she had the opportunity to do so.

Mary has also completely embraced her new identity as "Poison Ivy"; for example; when Ryan had offered Mary a cure for her mutation; but; instead of taking the cure, she had summoned roots from the asphalt below to destroy the cure; in order to keep her meta-human powers.

After Mary has completely embraced her new identity as "Poison Ivy", she had stated to her step-sister, Beth that; "i don't care what we do or where we go, as long as it's fun"; proving that; Mary still maintains her cheerful and carefree traits; but they have also become twisted.

Despite Mary's darker nature, she still has a sense of honor, justice and morals; for example, after Beth had informed her that; she had (accidentally) killed someone, Mary feet tremendous guilt, shame and remorse for causing that; said individual death; even though it was in self-defense.
After Mary is (apparently) cured from her meta-human physiology, Mary feels tremendous guilt, shame and remorse for the crimes that; she had committed; such as (accidentally) killing someone.

## Powers and Abilities

### Powers

* **Meta-human physiology:** Due to being infected; by one of Pamela Isley's vines; Poison Ivy 2.0 possesses meta-human attributes; such as arborgenesis, arborkinesis, cerebrokinesis, feromonikinesis, life-force energy absorption, telepathy and superhuman senses respectively. Presumably; the longer Poison Ivy 2.0 is exposed to direct sunlight or water; the more powerful she becomes; whenever Poison Ivy 2.0 utilizes or is about to utilize her powers; both of her eyes glow bright green.
	+ **Arborgenesis:** Poison Ivy 2.0 can generate and project several different types of plant life.
	+ **Arborkinesis:** Poison Ivy 2.0 can manipulate several different types of plants; for example, she is able to almost suffocate other individuals; into a honeycomb structure; such as Chris Hayner, she can summon vines that; are strong enough to immobilize both Batwing and Batwoman respectively. Poison Ivy 2.0 is also able to summon roots from below an asphalt that; are strong enough to immobilize Batwoman; long enough for both Beth Kane and Poison Ivy 2.0 to get away from the caped crusader.
	+ **Cerebrokinesis:** Due to Poison Ivy 2.0's pheromones; she can manipulate the minds of other individuals; to get them to do what she wants them to do.
	+ **Feromonikinesis:** Poison Ivy 2.0 can manipulate her pheromones; for example, she is able to manipulate them to (presumably) create any chemical that; she desires.
	+ **Life-force energy absorption:** Poison Ivy 2.0 can absorb life-force energy from other meta-humans that; she has created; this; allows Poison Ivy 2.0 to restore herself and her powers back to full strength; if she is in a severely weakened state. But if Poison Ivy 2.0 absorbs too much life-force energy from her sporelings; before they have a chance to completely recover; it will kill them.
	+ **Infection:** Poison Ivy 2.0's vines are capable of changing other individuals's physiology and transforming them; into a meta-human; granting them the same characteristics and plant-based powers that; Poison Ivy 2.0 possesses.
	+ **Telepathy:** Poison Ivy 2.0 can telepathically communicate; with other plant-based meta-humans over small or vast distances; such as Pamela Isley.
	+ **Superhuman senses:** Poison Ivy 2.0's senses are far more greatly developed than normal humans and most other meta-humans; for example, she is able to sense the presence of objects or other individuals, over small or vast distances; due to sound vibrations.

### Former power

* **Healing blood:** After taking the Desert Rose as an antidote after being poisoned; by Beth Kane, Mary's blood was able to heal allegedly every illness; by transfusion. These properties seemed to vanish after a while; since, after analyzing her own blood some months after taking the antidote, Mary found nothing abnormal anymore.

### Abilities

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### Weaknesses

* **Limitations:** Although Poison Ivy 2.0 is incredibly powerful; she does have her limits;
	+ **Blindness:** Poison Ivy 2.0 can only manipulate the minds of other individuals; as long as she can see them.
	+ **Herbicide and paralytic compound:** Poison Ivy 2.0 is vulnerable to a herbicide and paralytic mixed compound; as it is powerful enough to completely knock her out cold for a short period of time.
	+ **Mortality:** Poison Ivy 2.0 is mortal. As she can be killed; just like other living beings.
	+ **Pheromone blocker:** Poison Ivy 2.0 cannot manipulate the minds of other individuals; if they have taken a pheromone blocker.
	+ **Slow activation:** Poison Ivy 2.0's mind control powers do not activate instantly; leaving her vulnerable to attacks.
	+ **Salt and vinegar compound:** Poison Ivy 2.0's skin and vines; are vulnerable to a salt and vinegar mixed compound.

#### Former weaknesses

* **Limitations:** Initially, Poison Ivy 2.0's powers were only active; when she is exposed to direct sunlight. But after Poison Ivy 2.0's mutation was completed; her powers are now permanently active; without the need to be exposed to direct sunlight.
* **Poison Ivy cure:** After Batwoman had delivered a sample of Poison Ivy 2.0's meta-human blood to Jeturian Industries, the company's brilliant scientists had successfully developed a cure capable of reversing Poison Ivy 2.0's plant-based meta-human physiology. But the Bat team only had 12 hours to administer the cure to Poison Ivy 2.0; before her mutation becomes permanent. But unfortunately, Batwoman's efforts was thwarted; when Poison Ivy 2.0 destroyed the cure, depriving her of the opportunity to administer it. But after the 12 hour deadline had passed; Poison Ivy 2.0's mutation has became irreversible; as she is now permanently a meta-human.
* **Sunlight:** If Mary is exposed to direct sunlight; it will trigger her alter-ego, Poison Ivy 2.0. But after Mary's mutation was completed; her alter-ego, Poison Ivy 2.0 is now permanently active; without the need to be exposed to direct sunlight.
* **Split personality:** When Mary's alter-ego, Poison Ivy 2.0 is triggered; she has no control over her alter-ego's actions and doesn't remember any of the actions that; she had committed as Poison Ivy 2.0. But after Mary's mutation was completed; both of her personalities as her normal-self and Poison Ivy 2.0 have been permanently merged; into one.

## Equipment

* **Poison Ivy 2.0 suit:** Mary wears a green protective suit; when operating as Poison Ivy 2.0.

## Relationships

### Allies and friends

#### Luke Fox

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Luke is Mary's ally, friend, saviour and teammate.

#### Ryan Wilder

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Ryan is Mary's ally, best friend and team leader.

When Ryan offered Mary a cure for her mutation, she used her cerebrokinesis powers to discover what the latter's intentions are if she does not take the cure; when Ryan had stated that; "i would have to keep you confined; until we figure something out, we can't just let you hurt other individuals". Mary became completely enraged; by the fact that; her former friends did not know her at all. She then summoned roots from the asphalt below to immobilize Ryan and destroyed the cure; in order to keep her meta-human powers and turns against her former friends in the process; proving that; Mary has completely embraced her new identity as "Poison Ivy".

### Family

#### Jacob Kane

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Jacob is Mary's step-father and father-figure.

#### Catherine Hamilton

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Catherine was Mary's estranged mother.

#### Beth Kane

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Beth is Mary's ally, former enemy, former teammate, step-sister and saviour.

But despite Mary's ruthless actions, she does at least still have a good relationship; with her step-sister, Beth; who has never doubted, ignored or neglected her in anyway, Beth also helps Mary to embrace her new identity as "Poison Ivy"; proving just how strong the relationship between the step-sisters has become.

Although Mary was convinced; by Beth to remove the tracking nanobots from her bloodstream, after she had pointing out that; the Bat team will be able to find them; wherever they go; but she was still reluctant to do so, as Mary believed that; Beth would abandoned her the moment after she removes the tracking nanobots from her bloodstream; but after removing nanobots from Beth's bloodstream, the latter didn't abandon Mary; even; when she had the opportunity to do so.

#### Kate Kane

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Kate is Mary's ally, estranged step-sister, former team leader and saviour.

Due to the bond that; Mary shares; with her step-sister, Kate; she is one of the few individuals; who can talk her around.

But because of Mary and Kate's differences, they were never really close; much to Mary's dismay; but she still tried hard to be friendly and supportive of her step-sister. As a result; Mary harbored some resentment towards Kate for dismissing and only seeing her as a replacement for the latter's biological sister, Beth Kane.

## Appearances

* Non-DC Universe (1 television series)
	+ Batwoman
		- Season 1
			* "Pilot" (first appearance)
			* "Rabbit hole"
			* "Down, down, down"
			* "Who are you"
			* "Mine is a long and sad tale"
			* "I'll be judge, i'll be jury"
			* "Tell me the truth"
			* "A mad tea-party"
			* "How queer everything is today"
			* "An un-birthday present"
			* "Take your choice"
			* "Drink me"
			* "Grinning from Ear to Ear"
			* "Off; with her head"
			* "Through the Looking-glass"
			* "A narrow escape"
			* "If you believe in me, i'll believe in you"
			* "A secret kept from all the rest"
			* "O, Mouse"
		- Season 2
			* "Whatever happened to Kate Kane"
			* "Prior criminal history"
			* "Bat girl magic"
			* "Fair skin, blue eyes"
			* "Gore on canvas"
			* "Do not resuscitate"
			* "It's best you stop digging"
			* "Survived much worse"
			* "Rule #1"
			* "Time off for good behavior"
			* "Arrive alive" (mentioned only)
			* "Initiate self-destruct"
			* "I'll give you a clue"
			* "And justice for all"
			* "Armed and dangerous"
			* "Rebirth"
			* "Kane, Kate"
			* "Power"
		- Season 3
			* "Mad as a Hatter"
			* "Loose tooth"
			* "Freeze"
			* "Antifreeze"
			* "A lesson from Professor Pyg"
			* "How does your garden grow"
			* "Pick your poison"
			* "Trust destiny"
			* "Meet your maker"
			* "Toxic"
			* "Broken toys"
			* "We're all mad here"
			* "We having fun yet"

## Behind the scenes

* In the DC comics, Mary is the maternal cousin of Kate Kane.

## Trivia

* In the Arrowverse; Mary is the step-sister of Kate Kane; instead of her maternal cousin.
* Mary loves to watch puppy videos on YouTube.
* Mary is a huge fan of Glam Jams.
* Mary had over 3,500,000 million social media followers; but she lost most of them; after her mother, Catherine Hamilton and her step-father, Jacob Kane's underhanded activities were exposed to the public.
* Mary's blood type is b-negative.
* Mary's shoe size is 7.5.
* Even though Mary and Beth Kane (initially) weren't recognized; by the law as step-sisters; due to the fact that; the public was unaware of Beth's survival at the time; the two referred to each other as sisters; even Nora Fries recognized that; the two of them certainly fight like sisters.
* Mary is the first character outside of any team of heroes to have (correctly) guessed the existence of the multiverse on her own; although shen dismissing it as a "mere speculation".
* Mary is one of the few known individuals to become a meta-human; without being exposed to dark matter or the use of a particle accelerator.
* Unlike Mary's predecessor; Pamela Isley; her meta-human powers were (initially) only active; when she is exposed to direct sunlight, as it took days; before Mary's mutation was completed.
* According to Mary herself; she is more powerful than Pamela.
* Through unofficial sources; Mary has been referred to as "Poison Ivy 2.0" and "Poison Mary" respectively.
* As of "Toxic"; following Pamela draining Mary of almost all of her life-force energy; she (apparently) no longer possesses any meta-human powers. But it is unknown if Mary has permanently lost her powers, or if they have just simply become dormant or have been suppressed.

## Gallery

### Batwoman

#### "Pilot"

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#### "Rabbit hole"

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#### "Down, down, down"

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#### "Who are you"

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#### "Mine is a long and sad tale"

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#### "I'll be judge, i'll be jury"

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#### "Tell me the truth"

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#### "A mad tea-party"

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#### "How queer everything is today"

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#### "An un-birthday present"

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#### "Take your choice"

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#### "Drink me"

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#### "Grinning from Ear to Ear"

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#### "Off; with her head"

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#### "Through the Looking-glass"

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#### "A narrow escape"

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#### "If you believe in me, i'll believe in you"

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#### "A secret kept from all the rest"

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#### "O, Mouse"

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#### "Whatever happened to Kate Kane"

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#### "Prior criminal history"

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#### "Bat girl magic"

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#### "Fair skin, blue eyes"

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#### "Gore on canvas"

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#### "Do not resuscitate"

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#### "It's best you stop digging"

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#### "Survived much worse"

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#### "Rule #1"

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#### "Time off for good behavior"

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#### "Initiate self-destruct"

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#### "I'll give you a clue"

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#### "And justice for all"

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#### "Armed and dangerous"

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#### "Rebirth"

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#### "Kane, Kate"

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#### "Power"

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#### "Mad as a Hatter"

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#### "Loose tooth"

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#### "Freeze"

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#### "Antifreeze"

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#### "A lesson from Professor Pyg"

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#### "How does your garden grow"

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#### "Pick your poison"

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#### "Trust destiny"

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#### "Meet your maker"

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#### "Toxic"

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#### "Broken toys"

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#### "We're all mad here"

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#### "We having fun yet"

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