From Dragon Ball Encyclopedia, the ''Dragon Ball'' wiki
Banan (バナン, Banan) is a member of Freeza's Force.
Banan's name is a pun on the word Banana.
Banan has a beard and mustache, lilac-pigmented skin, two horns, orange hair, and a blue Scouter adorned over his face.
Banan appeared in "Vegeta's Ambition! I am the Greatest Warrior in the Universe!!" He his partner, Sūi, were sent to investigate two unknown battle power signals that had been detected by Zarbon on Planet Namek. During their search, they encountered Bulma Brief, Kuririn, and Son Gohan – the latter two being the source of these battle powers – who had only recently touched down on Planet Namek. The two soldiers damaged the group's spaceship, rendering them unable to leave the planet. In response, they were easily overwhelmed by the Earthlings, who had actually been suppressing their battle powers (a tactic they had learned in the conflict against Nappa and Vegeta, who had relied too heavily on the readings of their Scouter.