For a shark, Megalo is very friendly. He is also very loyal since he willingly went through with Luffy's idea of stuffing Shirahoshi in his mouth to sneak her out of Hard-Shell Tower. He also is somewhat protective of Shirahoshi as he was angry at Luffy when he made her sad. He appears to be very secretive since he only told Shirahoshi about Otohime's true killer and not to anyone else.