Robson

Robson: Wapol's pet who is a White Walkie, AKA wooly hippo. Wapol killed other of his brothers and was very unhappy with him. Wapol rides him as his personal transport, he was able to to take him up the Drum Rockies. During the fight between Luffy and Wapol, Robson fled down the mountain. He was never seen again.

First Appearance: Chapter 135; Episode 81