Yetti is a giant, cannibalistic Arlian that was owned by King Moai.
Yetti was sent against Vegeta and Nappa after they kill 15 of the Arlian king's elite guards. Nappa thought he was cute and asked Vegeta if he could keep him; which he allows. He then tried playing a game of fetch which involved Yetti getting one of his fingers torn off.
He is then killed after Nappa stupidly throws a Bomber DX at him. Thinking it was a ball.