Mocha functions as one of Minky Momo's three primary animal companions, featuring consistently throughout multiple franchise installments. In the original 1982 television series, Mocha appears as a brown monkey with a single visible tooth and rosy cheeks. Unlike Momo's other companions, the dog Sindbook and the bird Pipil, Mocha possesses no specialized talent.

The character returns in the 1991 sequel series redesignated as Chamo, now a white monkey with pink accents and larger, redder cheeks. Despite these visual alterations and the name change, both versions maintain core personality traits: a strong sense of justice coupled with impulsive actions that rarely yield lasting positive outcomes.

Within the 1985 OVA *La Ronde in my Dream*, Mocha accompanies Momo on her adventure to a mysterious island housing the Fountain of Youth. During this journey, Mocha interacts with both Momo's adoptive Earth parents and her biological parents from Fenarinarsa, preserving the established comedic dynamic from the television series. This OVA reinforces Mocha's position within Momo's core group of supporting companions. Across the television series and the *La Ronde in my Dream* OVA, Mocha's background remains consistent as a loyal, though often ineffective, supporter of Momo's quests.