- For other uses, see Monster (Disambiguation).
Monster is a monkey that partied alongside Shanks and his crew at the Partys Bar.
Monster is a small monkey with tiny eyes. Like many monkeys, he has brown fur over most of his body, but has white fur on his stomach, face and hands.
Monster seems to be very jolly and fun-loving, as he was seen partying with Shanks and his crew.
After Luffy stabbed his own eye, Monster partied with the Red Hair Pirates at Partys Bar in celebration of Luffy's craziness.
- Monster is classified as a Type B creature, "Small Friendly".