Sneeroff, operating a traveling theater from a large van that transforms into a performance space, is a physically imposing puppeteer. He exhibits a rough, demanding demeanor, often acting impulsively and rudely. Beneath this harsh exterior lies an underlying good nature and a sense of childlike wonder, especially concerning fairy tales and performances.

Renamed from Mangiafuoco in this adaptation, Sneeroff serves as a recurring antagonist. He captures the protagonist, forcing him to perform within his entertainment troupe. This version displays significant cruelty, acting as a primary source of conflict. His manipulative nature is evident in his interactions with recruited accomplices Jack the fox and Willie the weasel, whom he uses to control the protagonist.

Sneeroff's background reveals him as a deceptive figure touring regions, including Africa, under the pretense of entertainment while pursuing selfish gains like treasure hunting. His actions directly cause the protagonist's prolonged separation from his father. He maintains control over his performers through intimidation, aided by his loyal guard dog.

His eventual downfall comes after continuous antagonism, when former adversaries unite against him. This collective effort leads to his arrest, ending his role as an active threat. The adaptation amplifies his villainous traits beyond Collodi's original portrayal, transforming him into a persistent source of danger rather than a transient, compassionate figure, aligning with the series' darker themes.