Ukiki

Ukiki is a brown monkey found in Tall, Tall Mountain in Super Mario 64. They have lighter brown hands, legs, and a face. They will avoid the player in the area they are found, running away from them. If caught, they will steal the player's cap. They also take the player's cap when a Fwoosh blows it off.

There is a second Ukiki that can appear on top of Tall, Tall Mountain in the Mystery Of The Monkey Cage mission. If caught, they will open the cage containing the mission's star.

Fallen Ukiki
There is an unused animation of Ukiki falling down or tackling the player. This appears to be a similar scenario to MIPS Throwing, where the player would have been able to throw them, but it was removed due to time constraints and possible animal abuse issues.

Donkey Kong Apparition
Main Article: Donkey Kong Apparition

The Donkey Kong Apparition is an apparition that can appear in place of Ukiki. They are a harmful anomaly and should be avoided.