Janemba’s name is likely a pun on “Je n’aime pas,” which means “I don’t like” in French. Spelled 邪念波, Janemba means “Evil Thought Wave”.
Janemba’s original coloration was meant to be purple and white with red eyes. Interestingly, Janemba’s appearance when transformed by Time Breaker magic in Xenoverse 2 appears similar to this original design.
Janemba may be somewhat based off a Rakshasa, as his sword is sometimes referred to as Rakshasa’s Claw (羅刹爪 Rasetsusō).
In the form he took by possessing the Saike Demon, Janemba appears as a giant yellow obese monster. He has four holes on his belly that he uses to shoot his ki blasts and two holes on his shoulders. His legs and forearms are colored as a dull-purple. His eye sclera are white, and his eye irises and pupils are black.
Being are completely rounded. He also has a large tail, and two stubby toes.
As Super Janemba he becomes smaller and human-sized. He gains yellow eye sclera, upper armor color being dull-purple and his skin tone and tail is bright red. He also gains two dull-purple curved horns on his head while gaining dull-purple wrist-lets, pelvic armor, and ankle supports.
As Black Janemba, his form resembles Super Janemba, though his armor is now black and gains more spikes on on his shoulders and dark red lines on the sides of his face and body.