Janemba features across multiple story arcs in Super Dragon Ball Heroes, marked by dramatic transformations and battles. During the Universe Creation Saga, Dr. W modifies him using data from Super Saiyan 4 Xeno Goku and Xeno Vegeta. Awakening in Hell as Modified Janemba, he effortlessly overpowers Super Saiyan 4 Xeno Goku and Xeno Vegeta. He then confronts Super Saiyan Blue Goku and Vegeta—arriving via time distortion—and other Saiyan warriors, emerging unscathed from their combined energy assault. Temporarily repelled by Demon Gods Putine and Salsa, with Putine freezing his legs and Salsa launching him backward, Modified Janemba returns to battle the unified Dragon Team, Time Patrol, and Demon Gods. He dominates using his Dimensional Hole technique until Putine and Salsa stall him, enabling Xeno Goku and Xeno Vegeta to achieve Super Full Power Saiyan 4 Limit Breaker. In this state, they overpower and obliterate him with the Limit Breaker Double Ultimate Dragon Fist. Later, in an "Unknown Age," Janemba reemerges and encounters Baby, whose attempted infection triggers a parasitic fusion called Baby Janemba. The Saiyan Hero Beat travels back to this era, defeats Baby Janemba, and causes their separation. Janemba is subsequently defeated, while Baby persists as Baby Vegeta. Janemba intrudes on the Supreme Kai of Time Saga’s Super Space-Time Tournament, engaging Kid Buu in a fierce, evenly matched duel. After Kid Buu lands a knee strike to his face, Janemba retaliates with a brutal headbutt. Within one space-time during the Demon Invader Saga, Majin Ozotto absorbs Janemba.