ImmortaleWeapon/Sans

===Appearance===
Sans often wears a red hoodie sweatshirt and black gym shorts. His height is what he uses to his advantage to hold his weapons. He stands at 6' 9 well if you don't add the spear he replaces his spine with. He measures his height in claymores. But he wears black sneakers. 
But that's not what sticks out about him. The thing besides the consistent weapons sticking out of his body. His eyes are very important in his AU along with his soul. His soul has a big ass hole right in the center of it. But not only that but it seems about ready to fall to pieces because his soul has a total of seven cracks going outward from the hole.
That needed to be told before we explain his eyes because his pinpricks are completely shattered and just sit there. But his vision is that of an insect and he can move them around just to freak people out. But the pinpricks represent his shattered soul.
Now onto this glowing eyes. Sans right eye glows his normal blue but he can change the color to determination red. But his left socket can change from the dark black empty socket to a bright white and his magic eye is black a pitch black. 
But you'll also spot him with weapon after weapon sticking out of his body for intimidation. His most common appearance is him replacing his spine with a razor sharp spear, knives covering and stabbing through them just so he could possibly one hit you with a smack of his arm. But the most notable thing would be the arrow entering through the back of his skull and exiting through his stuck crooked smile. The other points would be the two claymores going into each shoulder to the opposing hip and arrows covering his legs. But you on duty would see him carrying an axe and or a sword on his hand. 
===Backstory===
Humans and Monsters once lived in harmony. But that was until the accident. Gaster the royal scientist was an insane scientist that wanted to achieve a feat and become the smartest brain to ever exist. But war raged between monsters and humans because he invented immortality.
It started when he discovered soul power and wanted to use this to achieve his goal at any cost. He even used close friends as test subjects. But his greatest success was when he finally turned insane and used his own son as a guinea pig. But he was obviously successful. But at a cost. 
But they won the war but lost the fight due to Gasters son fighting in the war. But they were sealed underground but just barely by wizards that made a barrier so strong they died making it. 
The rest is basically canon. 
===Personality ===
He tends to be serious when doing his job but is laid back most of the time. But he is extremely smart and has outclassed his father a thousand times over. He is kind whenever he is around his friends but if the compare him to how the humans killed some monsters he won't be afraid to harm them. But he is very over confidant to the point he allows his opponent a free hit. 
But due to him being in the war and taking practically thousands of lives he suffers from insomnia and insanity at times. But he is severally depressed due to him losing his family and killing his brother. But he doesn't let it show. He also hates it when they think they are smarter than him but he doesn't let it show much. But he isn't afraid to one up them. 
Also since he has killed thousands he has a heavy weight on his conscious and he goes insane every once and awhile.
===Abilities===
Blue Magic: Basic but he is more skilled than original. 
Weapon and fist fighting Mastery: Self Explanatory 
Immortality: He could live forever. 
Bug like Sight: Due to his shattered pin pricks his sight is jumbled. This ability has an advantage against those who require their opponent to look at them. 
Black, basic and red bone attacks: Sans bone attacks can change if he changes what type of magic he would be using. Red means he can inflict Charas fully awakened power and dish out massive damage. But his black bones are quiet different. They are able to access the true power of what the core is able to dish out if it wasn't just some power source keeping the undergrounds lights on. 
Determination attacks: This is one of his aces. Sans is able to since he was used for the determination experiments he can control the power of determination to an extent. For example he can mess with save points. Heck he can turn the save points to the color red and when it's in this state sure the human can save. But he is able to wipe that save point from existence. For example say goodbye to both your save file and the station in the judgement hall. 
Forced button activation: I'm going to use the reset button as one example he can use it to highjack the reset button and reset the timeline himself. But the only catch is that he has to get to it before the person that pulled it up presses it. 
Weapon Output (WO): This ability is why Sans mainly uses weapons instead of magic. To the extent well no one knows yet. 
Improved Blasters: Just like his bones they are more powerful and take a lot less energy to summon. He can also combine his black magic which do ten times more damage or he could max it out and go one on one with a King Blaster. But when he adds the determination that's where its most noticeable attack wise. The blast is able to burn it's way through any object in the beams path. But that uses a lot of energy so he doesn't use it as often. 
Edited Blasters: Now I'm sure there are multiple reasons Sanses don't shoot themselves. But what if I told you that he could afford to. His blasters do something very very different. His basic blue beams just power him up for a short amount of time. But his black beams null any sat effect like Karmas poison Toxin Sans poison. Heck his determination beam if a object is stuck inside him and he can't get it out then he shoots himself with said ray, then said object burns away awhile leaving himself unharmed. 
Teleportation: Basic teleportation for a Sans 
Healing: Sans has the ability to heal any injury within five seconds of him receiving it. This is also how he repairs his soul along with using his blue magic. 
Soul explosion: Sans has obtained this ability the same day Gaster had made him unkillable. He is able to make his soul literally explode but it doesn't any damage to the area but it does cause massive damage to anyone hit by it. The ability plus healing and immortality a perfect combo. 
(OK) Overloaded karma: His Karma is his buff for his magic. He obtained this magic ability through his expositor to determination. Sans doesn't use magic to much on others just do to this. Originally the effect of Karma makes you take some type of poison damage due to the amount of LV you obtain. But Sans Karma uses his LV instead in order to poison the enemy. But it just doesn't mess with healing but it works like poison and continuously take damage. But what unlike other Sanses his he is able to choose wither or not to use it.
=== Relationships===
Immortalweapontale Frisk: Is a good friend and a daughter figure. 
Immortalweapontale Chara: Is merely, but treats her like his own child.
Ink Sans: Just appeared one day out of the blue. But business partners.
Core Frisk: Helped him escape Fresh so he's in her debt.
Fresh Sans: is very confused but scared all the same.
ImmortalWeapon Gaster: he respects him but happy he killed him.
Immortalweapon AU: Home.
ImmotalWeapon Toriel: Love of his life.
Evil Sanses: Dislikes them entirely.
===Trivia===
*Sans birthday is February 8th.
*His age is 823 and he prefers not talking about age but want lie about it. Well unless he doesn't trust you.
* Sans prefers not using magic because he prefers close combat.