Omega Buuron or Super Buu Omega Shenron Absorbed was created by Tree Of Might. Here's his story: Super Buu was killed by Vegito (Partly, He was REALLY killed by the Spirit Bomb) But, he survived! He stayed in the same spot for 23 years. While Goku was fighting Omega Shenron, Super Buu sneaked up behind him and absorbed him! He became Omega Buuron!