Luck

Psychotic, quick to anger, violent, grotesque, murderous, blood thirsty. All of these have been said about Luck, and they are all completely true. However, if you can befriend him, he will protect you to his dying breath, ready to lay down his (and everybody else’s) life for you. You meet him in an alleyway on your way back from work. You’ll have to convince him not to kill you. If you’re charismatic enough, you can even romance him. You can pick any gender you want, he’s bi.