Kiki (otherwise known as E-20 Kiki or E-01 Baby Kiki) is a Badnik designed by Doctor Robotnik, presumably just before he slipped into total madness (or afterwards). The orange monkey robot acts much like the previous Coconuts and Monkey Dude models, swinging on objects before throwing bombs at their foes. Although it was not explicitly named, Kiki first appeared in Sonic the Comic Online story The Syndicate as a minor obstacle to Sonic the Hedgehog.
Prior to this, Kiki made appearances in Sonic Adventure, Sonic Adventure 2 and Sonic Advance as foes created by Robotnik. Some even drove go-karts and police cars.