Billy (Adventure Time)

"♪ Whose the greatest warrior ever, a hero of renown, who slayed an evil ocean, who cast the Lich King down? Billy! ♪"

- Narrator

Billy is a character on the cartoon Adventure Time with Finn and Jake. He is a retired hero that saved the land of Ooo on numerous occasions. Both Finn and Jake consider him to be their personal hero and role model. Princess Bubble Gums has referenced him as a great savior of he land and he was responsible for beating the Lich and sealing him away in amber.

Finn and Jake eventually meet their hero but find he has not only retired but that had lost heart in adventuring. Billy says that beating up evil is only a temporary solution because it is always replaced by some new evil and people keep getting into trouble. Billy encourages Fin and Jake to stop resorting to violence and help society by volunteering for community service. After trying and failing to help society with non-violent aid Finn stops a rampaging monster by beating it up and realizes sometimes violence is the answer he goes to Billy with his new revelation. Once Billy sees the old woman saved he realizes that such efforts do in fact pay-off and thanks Finn for reminding him of the importance of fight the good fight.

Billy's history with the Lich eventually catches up with him, when the Lich is accidentally freed Finn and Jake set out to stop him with the sword of Billy. The Lich is defeated eventually but escapes death by possessing Prince Bubble Gum at first and then later a snail once it is driven out of Princess Bubble Gum. With some help the Lich is able to get his hands on the Enchridion, an ancient book that catalogs the secrets of heroes. Once he has the Enchiridion the Lich confronts Billy killing Billy and his friends. Upon killing him thee Lich possesses Billy's body and uses the guise to con Finn and Jake into helping him open a portal between time and space to a realm where he will be granted a single wish. By the time Finn and Jake catch on to the Lich's trick thee portal is already opened and the Lich in Billy goes to make his wish. Finn and Jake use their wishes to unmake the Lich's. When last seen Billy was still possessed by the Lich and trapped in the pocket dimension having wasted his wish.