Death

Blablablablablabablabla death sucks

Abilities

 * Death can teleport two (possibly more) people or objects with a red beam that he casts from his eyes.
 * He is a skilled drummer. His genre seems to be death metal.
 * Death can create an energy prison to execute anyone who fails to beat him in a music battle.
 * In association with the prison, he can create flames from his skull to execute the loser as seen in "Death in Bloom." However, what it does is currently unknown.
 * Death can restore memory to those who drank from the "River of Forgetfulness" by the "Kiss of Death."
 * He was also shown to possibly have the ability to be intangible because Finn passed through him while kicking. His only explanation as to why Finn couldn't harm him was: "Because your brain is stupid!"
 * Death can apparently bring things back from the dead such as the Princess Plant.
 * Because he is Death itself, he is immortal and deathless.

Quotes
"Another one! Be gone, mortal!"

"You can't kick me because your brain is stupid."

"Those are the rules in the Land of the Dead. Lose a music battle, lose your life."

"What? You know Peppermint Butler?Man,you can have what every you want!"

"Kiss of death,baby.You got your memory back."

"I'm going to kill you now."

Trivia

 * Death was originally going to be some sort of Japanese cosmic alien, according to Jesse Moynihan's blog. This is why Death's Castle resembles a large Japanese rock garden. Moynihan later changed it to a design inspired by Alejandro Jodorowsky's The Holy Mountain. Afterward, he changed the character's head into a horse skull because he got self conscious about the similarity.
 * Although Death is one of the most powerful beings in the universe, there are some characters who can "cheat Death" and thus not be able to be controlled by him, such as The Lich and Hunson Abadeer. Marceline referred to this as being "deathless."
 * He, along with others, resembles the Grimm Reaper.