Kiki

Kikis are some of Dr. Eggman's robots, introduced in Sonic Adventure. They are weak robotic monkeys that throw bombs. They cross over with the Mario franchise in the Mario & Sonic games.

Mario & Sonic at the Olympic Games
Kikis first appear in the DS version of Mario & Sonic at the Olympic Games as targets in Dream Shooting, and obstacles in several minigames.

Mario & Sonic at the Olympic Winter Games
In the next game, a Kiki is destroying a Chao's garden, and Daisy has to destroy it with snowballs in Chase off Kiki!

Mario & Sonic at the London 2012 Olympic Games
Kikis also appear as enemies in Mario & Sonic at the London Olympic Games.