From Dragon Ball Encyclopedia
Saike Demon had red skin and two horns.
Saike Demon appeared in Dragon Ball Z: Fusion Reborn. He was careless while working the Spirits Laundry Machine and, distracted by his death metal music (psychedelic funk or psychedelic rock in the original), forgot to change its tank. The tank overflowed and he was surrounded by thousands of years of spiritual waste. The purplish-gray smoke mutated his body and turned him into Janemba. After Janemba was hit with Gogeta's Stardust Breaker, he transformed back into a teenage Ogre and ran away, frightened at seeing Gogeta.
He is named Tank-Boy in Dragon Ball Z: Buu's Fury.
He is named Aka Oni (赤鬼, Aka Oni; Literally meaning "Red Ogre") in Miracle Battle Carddass Dragon Ball Kai.