Three months before the Princess ninth birthday Buu knew his time was down to a short number of weeks. Not wanting his death to be any closer to or King Yemma forbid on his daughter's birthday he summoned the Ice King to his castle and took Billy, Peppermint Butler, Marceline, and Princess Bubblegum to a hallow section of the giant maple tree. With his daughter in his arm he explained what The Lich was, that his end was here, how it came, why he really hired Billy, and what was going to happen when the Ice King got there. Bubblegum was in tears as was Buu seeing his daughter sadness.
"My dear sweet little Princess I wish it didn't have to be this way but my sacrifice will allow the land of Ooo to live on." Ice King finally arrived at this point flying in.
"Okay I'm here where's the party, hey Marceline how's it *Gak*" Marceline gripped his throat.
"Just shut up and freeze the sap when you're supposed to." Marceline stated sadly as she watched the floor.
"Marceline let Ice King go." She did and Buu placed Bubblegum in her arms. "A father's job is to make sure his daughter is safe and loved you have an entire kingdom that adores you, now one last thing so I can still to protect you." He kissed his daughters forehead a pink light shone as he made contact which signified the transfer. He gave to his daughter the only thing that was keeping him alive, his healing ability. With it she could survive anything as long as a single piece of her was left but without his morphing ability to go with it someone else would have to put her back together. Buu stepped back and kneeled as the pain forced him to the ground, "Marceline now!" She nodded and flew away with Princess Bubblegum. As soon as she was out of sight The Lich tore out of Buu's stomach, Billy socked the weakened Lich into the sap of the Tree. Crazy as he was Ice King picked up the cue and cooled the sap instantly turning it into amber. Ice King cheered himself and flew away happily,
"Marceline did you see I defeated The Lich." Marceline punched him in the face, and flew back to the tree. "She touched me twice." He giggled like a school girl and flew off. Marceline looked down at Buu's body he looked like he had before he gave up his healing power only now his stomach was torn open and he was slowly deflating and turning into a skinnier dark purple version of himself.
"Daddy," Bubblegum jumped down and rushed to her father side. She cried over the lifeless form of her dad.
"I can't do this anymore," Billy stated as he removed his gauntlet and let it drop to the floor. "First my dog now Lord Buu. How can I be a hero if people are just going to die anyway?"
"So you're just going to give up being a hero?" Marceline asked.
"Yep," that was all he said before he leapt out of the tree.
"Fine we don't need a quitter like you to be the hero of Ooo, we've got a better one and he's not even five." Marceline looked back at the daughter of her best friend. "That's it I'm out of here," and she flew off back to her house. Princess Bubblegum cried for an hour before Peppermint Butler took her down to her room.
