Super Janemba is the more powerful form of Junemba (Janemba) and, unlike his previous form, is deadly serious. Once again, H.F.I.L/HELL morphs into Super Janemba's fantasy which is a desolate grey graveyard of spikes and dust. Super Janemba wields a fearsome red sword which he uses to almost kill Goku but Vegeta saves him.

Super Janemba is slightly more powerful than Super Saiyan 3 Goku and a lot more powerful than Super Saiyan 2 Vegeta. Realising that neither of them can beat him, Goku teaches Vegeta the fusion dance so that they may get enough power to win the fight, however Vegeta messes up the performance and they transform into Fat Gogeta, the failed fusion. Unable to fight or ascend, Super Janemba beats the life out of Fat Gogeta until the fusion wears off. Pikkon appears and helps fight Super Janemba but is quickly beaten. However it buys Goku and Vegeta enough time to fuse properly, becoming the fearsome Super Saiyan 2 Gogeta.

With more than enough power to defeat Janemba, SS2 Gogeta kicks him about a bit, then creates a Soul Punisher with his left hand and throws it at Super Janemba, exorcising all the evil spirits from his body. Because Super Janemba is an evil spirit, he is effectivley destroyed, causing him to revert back to a terrified Tank Boy.