Jeice is a member of the Ginyu Force from Dragon Ball Z.
Jeice was first seen when he landed on Namek, along with the rest of the Ginyus. He quickly picks up Gohan, Vegeta, and Krillin's power level, and they set off to find them.
Once the rest of his comrades are killed, besides Ginyu who was not present, he sets off to find Ginyu.
Once Vegeta eats the Senzu Bean, he easily crushes Jeice.