KiKi (キキ) is a monkey robot first seen in Sonic Adventure. This robot draws inspiration from the earlier Coconuts badnik.
Eggman built Kikis with the ability to drive, giving rise to two variants of the robot in Sonic Adventure: Kart Kiki and Cop Speeder.
Kikis are are found in high places or on the ground. It iddles about either watching the scenary if in high places, or scratching its head every now and then if on the ground. The ones on trees and some on the ground always carry bombs. It will snicker while jumping and doing sommersaults excitedly if the attack is succesfull. Some bombs might explode right away or after awhile, allowing a character to pick them up and throw them at badniks to destroy them. There are some who linger on the ground and can run slightly away from a character if spotted, or they will try and hurt them by coming close.
There are also two Kikis in cages out in the Adventure Fields, for both Sonic and Knuckles stories. The first is destroyed by using Light Speed Attack thanks to the Ancient Light upgrade, while the second is destroyed by using the Shovel Claw to dig up a self-destruct switch... to throw at the cage.
Sonic Adventure 2
Kikis in Sonic Adventure 2 display two kinds of behaviour. One version that jumps on one foot and that can throw bombs and a second which only rotates on their place and jumps, and which carries none. The bombs can either be small or big, but they will flash intermitently more and more quickly until they explode. These are still pickable and can destroy enemy targets just like Baby Kiki's in Sonic Adventure. Additionally, these bombs destroy containers or cages and fizzle Omochao. The Kiki awards 100 points when destroyed.
In their 2D outings, Kikis mimic much more closely the behaviour of their Coconuts predecessors, being confined to trees hurling nut-based explosives. In Advance 1, they show up in Neo Green Hill Zone, while in Advance 2 they appear in Leaf Forest.