Byleth Eisner

is one of the main protagonists of Nintendo's franchise. 
They are the main protagonist of the Fódlan Saga, being the main protagonist of the 2019 tactical video game and the tritagonist of its 2022 spin-off sequel .
Byleth is the lieutenant of a mercenary group lead by their father Jeralt Reus Eisner, a former Knight of Seiros. Due to their skills and unflinching personality, they became known as the Ashen Demon. After rescuing three noble house leaders from bandits, they accept a position as a professor at the Officer's Academy offered by Archbishop Rhea, and begin teaching one of the three student houses: The Black Eagles House led by Edelgard von Hresvelg, the Blue Lions House led by Dimitri Alexandre Blaiddyd, or the Golden Deer House led by Claude von Riegan. They are also guided by Sothis, a mysterious girl who only they can see and who gives them the ability to turn back time.
In Japanese, male Byleth is voiced by , while female Byleth is voiced by and for the fallen varient. In English, male Byleth was originally voiced by and is now voiced by , while female Byleth is voiced by and for the fallen varient.
==Appearance==
===Both===
Byleth has blue hair (short for Male, long for Female) and blue eyes. After fusing with Sothis, Byleth's hair and eyes turn green.
===Male===
Male Byleth is a tall and well built man, who usually wears black robe, black armor on his torso, black pants and long black boots. There is also belt-like armor on his waist with golden emblem and purple knife holder.
===Female===
Female Byleth is a tall beautiful woman, who usually wears grey and black robes, paper with an amulet around her neck, arm armor, armor bib which exposes her navel, patterned tights and black boots. There is also belt-like armor on her waist with golden emblem and purple knife holder.
== Personality==
Byleth displays little to no emotion at the beginning of the game, and remains a composed and focused individual throughout the story. Jeralt noted in his diary that his child neither laughed or cried at all during their infancy. However, upon taking the position of teacher at the Officer's Academy, they begin to slowly open up to their students and form close bonds with them; by the time of the Battle of the Eagle and Lion, they begin to smile.
Even before their arrival at Garreg Mach, Byleth is compassionate to others despite not expressing emotion, as they are interested in helping and listening to people; their other affinities include swords, reliable allies, smiles and being trusted, displaying no apparent dislikes. Additionally, they detest senseless killing. Despite showing a seeming indifference towards their father most of the time, including referring to him by name, Byleth cares deeply for Jeralt and would never forgive anyone who brings harm to him, and is stricken with grief upon his death.
==Powers and Abilities==
===Powers===
Crest of Flames power/Power of Goddess Sothis:
*Superhuman Strength:
*Superhuman Durability:
*Superhuman Speed:
*Superhuman Reflexes:
*Enhanced Sences:
*Magic:
** Time Manipulation: Due to His/Her connection with Sothis, Byleth can rewind the course of a battle to correct costly mistakes. When activated, Byleth can reverse previous actions performed up to a specific point. Both Byleth and enemies actions are rewound. If Divine Pulse has at least one charge remaining and Byleth dies, then Divine Pulse automatically activates to allow Byleth an opportunity to rewind immediately to a desired spot during the battle, thus preventing their death unless all charges are used. Byleth can have a maximum of 13 charges.
**Elemantal Manipulation: 
***Pyro Magic/Pyrokinesis:
****Bolganone:
****Ragnarok:
***Thunder Magic/Electrokinesis:
**Healing:
**Portal Creation:
**Nosferatu:
**Recover:
**Aura:
*Immortality:
===Abilities===
*Master Swordsman: 
*Master Mage:
==Equipment ==
*Sword of the Creator: Byleth wields the legendary Sword of the Creator, attuned to their Crest of Flames, the blade of which is able to retract and used like a whip for ranged attacks. While wielding the sword, Byleth is capable of using the Combat Art Ruptured Heaven; upon fusing with Sothis and the Sword becoming the Sublime Creator Sword, the Combat Art is replaced with Sublime Heaven.
*Knight-Captain's Sword: In the Three Hopes timeline, due to never acquiring the Sword of the Creator, Byleth instead wields the Knight-Captain's Sword, originally given to their father Jeralt during his time as Captain of the Knights of Seiros, which he passes on to his child.
==Other Media==
===Super Smash Bros.===
Byleth appears as a playable character in Super Smash Bros. Ultimate as the last downloadable character in the first Fighters Pass. Both the male and female versions of Byleth are playable.
===Fire Emblem: Engage ===
Male Byleth appears as one of the thirteen Emblem characters in the 2023 tactical video game Fire Emblem: Engage.
==Trivia==
* Byleth's default name in Japanese differs slightly between genders, as a male Byleth is spelled "ベレト" (Bereto), while the female is "ベレス" (Beresu).
* Three Houses updated on September 10th 2019 to change Male Byleth's voice actor from Chris Niosi to Zach Aguilar. This is the only instance where a character's voice actor was changed post release in a main series Fire Emblem title.
*The male version of Byleth is the first, and so far the only character in Heroes to become available through recognition of another game's data. At the launch of Three Houses, Heroes players that played both games on the same Nintendo Account would have received a free Byleth: Tested Professor unit if they registered their copy of Three Houses for gold points. This offer was active through one year after the game's launch, likely because gold points can only be earned from physical copies of Switch games within the first year of their release.
*Byleth is the first and only Avatar character to be referred with neutral pronouns in the game. Because the game is fully voiced, the use of titles and neutral pronouns allows the same dialogue to be used for both genders of Byleth without the need to record separate lines. Gendered pronouns are used in the game's epilogue and some tutorial text, which are not voiced.
* Byleth's death quote is the same as Azura's voiced defeat quote in Fates.
*Byleth is the second protagonist whose defeat in Casual Mode doesn't cause a Game Over. The first was Corrin.
* Byleth's artworks for Three Houses depict them wielding the Sword of the Creator.
*Byleth was implied to be 20/21, but with the Cindered Shadows story released, it's been confirmed that they're indeed of said age by Sitri's date of death, which has been added on her grave.
*In Byleth's trailer for Super Smash Bros. Ultimate, Sothis gives them the Heroes' Relics used by the house leaders, Aymr included, and while that's only a story mechanic, it's ironic considering that the axe shouldn't have been created yet.
==External Links==
*
*
*
*
*Byleth on The Wiki
==Navigation==
Category:Fire Emblem Heroes
Category:Video Game Heroes
Category:Fantasy Heroes
Category:Crossover Heroes
Category:War Heroes
Category:Genderless
Category:Leaders
Category:Warriors
Category:Mercenaries
Category:Status Dependent upon Player Choice
Category:Betrayed
Category:Traitor
Category:The Messiah
Category:Mute
Category:Charismatic
Category:Honorable
Category:Loyal
Category:Archenemy
Category:Mentors
Category:Dreaded
Category:One-Man Army
Category:Paragon
Category:Strategists
Category:Fighters
Category:In Love
Category:Successful
Category:Disciplinarians
Category:Officials
Category:Good Vs. Good
Category:Friend of a Villain
Category:Freedom Fighters
Category:Selfless
Category:Genius
Category:Lawful Good
Category:Big Good
Category:Vengeful
Category:Tragic
Category:Related to Villain
Category:Orphans
Category:Lethal
Category:Pawn of the Villain
Category:Rescuers
Category:Protectors of Innocence
Category:Passionate Learners
Category:Feminists
Category:Status Dependent on Version
Category:The Hero
Category:Villain's Lover
Category:Master of a Villain
Category:Knights
Category:Voice of Reason
Category:Antagonists
Category:Rivals
Category:Egalitarian
Category:False Antagonist
Category:Type Dependent on Version
Category:Deities
Category:Right-Hand
Category:Undead
Category:Benevolent Rulers
Category:Hybrids
Category:Dragons
Category:Counterparts
Category:Counter-Terrorists
Category:Superheroes
Category:Insecure
Category:Mysterious
Category:Fallen
Category:Possessed/Brainwashed
Category:Masterminds
Category:Merciful