ITALIANO:ScimpaRagno è un Aracnascimpa (un gioco di parole tra aracnide e scimpanzè) dal pianeta Aranhascimmia. Come suggerisce il suo nome, è un alieno con sei arti molto simile ad una scimmia, con quattro occhi verdi, un corpo peloso ed una linea che percorre il suo corpo dal simbolo dell'Omnitrix alla sua schiena. Ha un'agilità sovrumana e, come un ragno, può emettere ragnatele dalle quali appendersi o lanciarsi o creare reti dalla sua coda. Inoltre, aderisce alle pareti.

ENGLISH:Spidermonkey (voiced by Dee Bradley Baker) is an Arachnichimp (a play on arachnid and chimpanzee) from the planet Arahnascimmia ^[41] (can also be called "Arachna", said by Simian) . As his name suggests, he is a six-limbed monkey-like alien, with four green eyes, hairy body, and a line coming out from his Omnitrix symbol to his back.

He has superhuman agility and, like a spider, can spin webs that he can swing from or create nets from his tail, and stick to walls. When Ben transforms into Spidermonkey, he talks in an excited, childish tone and displays mischievous characteristics with occasional monkey-like screeching. As seen in "What Are Little Girls Are made of?," Spidermonkey can be tied by his own webs.

He is first seen in "What Are Little Girls Made Of?" when Ben uses him to fend off his grandmother, Verdona Tennyson.