For other uses, see Monster (Disambiguation).

Monster is one of the Senior Officers and musicians of the Red Hair Pirates. He first appeared playing with his crew at the Partys Bar.


Monster is a relatively large monkey with tiny eyes and head fur tied up into a topknot. Like many monkeys, he has brown fur over most of his body, but has white fur on his stomach, face and hands.

12 years ago, Monster was smaller, with beady eyes and no topknot.


Monster seems to be very jolly and fun-loving, as he was seen partying with Shanks and his crew.

In the Red Hair Pirates, he is frequently seen perched around Bonk Punch’s shoulders.

Abilities and Powers

Monster is a Senior Officer of the Red Hair Pirates, giving him authority over lower-ranking members of the crew. Despite being a monkey, he possesses high intelligence and can understand humans.

Monster fights in tandem with Bonk Punch, beating up weaker enemies while Punch charges up the strength of his own attacks to deal with stronger foes.



After Luffy stabbed his own eye, Monster partied with the Red Hair Pirates at Partys Bar in celebration of Luffy’s craziness.

Summit War Saga

Marineford Arc

Monster showed up alongside Bonk Punch and fellow main fighters of the crew in order to stop the Summit War of Marineford, being ready to fight if the fighting kept on.

Whole Cake Island Saga

From the Decks of the World: The 500,000,000 Man Arc

After the timeskip, Monster and some members of the Red Hair Pirates were at the ruins of a certain island.

Wano Country Saga

Wano Country Arc

Monster celebrated with Bonk Punch at the news of Luffy joining the Four Emperors.

The following events are Non-Canon and therefore not considered part of the Canon story.

One Piece Film: Red

Uta organized a concert on Elegia in order to realize her dream of performing for the whole world. Monster was present during the concert.

Concludes non-canon section.

Final Saga

Egghead Arc

Monster was later on board the ship when the crew dropped Marco off at the shores of Sphinx, and later partied with the crew at Elbaf, alongside the Giants when they received word that the Kid Pirates were challenging them. Monster later was on the ship when Shanks singlehandedly defeated the Kid Pirates and Dorry and Brogy destroyed the Victoria Punk.

Major Battles

  • Red Hair Pirates vs. Kaidou and King (unseen)
  • Red Hair Pirates vs. Kid Pirates (unseen)

Translation and Dub Issues

His name was romanized as Monstar by some early fan translations. However, it is spelled “Monster” in the English edition of the 7th popularity poll, to date the only professional rendering.


  • Monster is classified as a Type B creature, “Small Friendly”.
  • Monster may be named after the Monster Energy brand of energy drinks. This fits with the drink-based naming scheme of some of the Red Hair Pirates.


  1. 1.0 1.1 See One Piece World Top 100’s East Blue section.
  2. 2.0 2.1 2.2 2.3 2.4 One Piece Manga — Vol. 1 Chapter 1 (p. 6), Monster makes his debut.
  3. 3.0 3.1 3.2 One Piece Manga and Anime — Vol. 59 Chapter 580 (p. 10-11) and Episode 489, Monster shows up in the Summit War.
  4. 4.0 4.1 4.2 SBS One Piece Manga — Vol. 101 (p. 96), Monster is revealed to belong to the Red Hair Pirates.
  5. 5.0 5.1 5.2 5.3 Volume 4000000000 “RED” (p. 45), Monster’s crew position and fighting style are revealed.
  6. 6.0 6.1 Vivre Card – One Piece Visual Dictionary (EX Characters: East Blue Saga Vol. 1 #0016), Information about Monster is revealed.
  7. One Piece Blue: Grand Data File (p. 30), Monster’s name is revealed.
  8. 8.0 8.1 One Piece Manga — Vol. 83 Chapter 837, cover story: From the Decks of the World: The 500,000,000 Man Arc Vol. 24.
  9. One Piece Manga and Anime — Vol. 104 Chapter 1054 (p. 10) and Episode 1081.
  10. One Piece Movie — One Piece Film: Red.
  11. One Piece Manga and Anime — Vol. 105 Chapter 1059 (p. 2) and Episode 1087.
  12. One Piece Manga — Vol. 106 Chapter 1076.
  13. One Piece Manga — Vol. 107 Chapter 1079.
  14. One Piece Blue: Grand Data File (p. 88-89), Classification of animals by danger.

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