Monster Hunter

Monster Hunter (モンスターハンター) is a popular Japanese action role-playing game franchise developed and published by Capcom.

In 2012, a collab was held between JoJo's Bizarre Adventure and the game Monster Hunter 3 Ultimate, featuring JoJo-themed quests, cosmetics, as well as the ability to unlock unique items based on Crazy Diamond and Harvest from ''Diamond is Unbreakable.

Monster Hunter 3 Ultimate
In July 2012, Capcom announced a collaboration Monster Hunter 3 Ultimate for the Nintendo 3DS and the JoJo's Bizarre Adventure series in the September 2012 issue of V Jump magazine. The collaboration started on August 10, 2012 and included two free downloadable quests. By completing these collaboration quests, players could unlock the "Crazy Diamond" hammer, which healed allies by attacking them, as well as a mask based on Harvest called the "Stand Mask" that could be equipped to the player's Shakalaka to constantly gain money. Players could also download a JoJo-themed Guild Card background and pose. The collaboration likely came about due to the release of Monster Hunter 3 Ultimate coinciding with the release of JoJo's Bizarre Adventure HD and the 2012 JoJo exhibition, which was happening around the same time.

The "Let's Go Hunting!" collaboration quest begun on August 10, 2012, and was given to the player by Shigekiyo Yangu. In the quest, players can obtain Kameyu Stamps needed to craft the "Stand Mask," a special mask based on Harvest that can only be equipped to either Cha-Cha and Kayamba. The quest requires players to hunt two normal and two subspecies of Kulu-Ya-Ku, and completing the quest rewards the player with a minimum of 13 Kameyu Stamps. The name of the quest is a reference to the Let's Go Hunting! story arc.

The "Obsidian is Unbreakable" collaboration quest begun a week later on August 17, 2012, and was given to the player by a a young man with a pompadour. The quest requires players to hunt a single Brachydios, and is considered notoriously difficult among Japanese fans. By clearing the quest, the player can collect Unbreakable Diamonds, which can be used to craft the "Crazy Diamond" hammer. The hammer has one of the highest attack powers in the game and has a unique effect that allows players to heal a small amount of damage to other players when they attack them, referencing Crazy Diamond's ability to heal things. The Brachydios in this quest is extremely quick to anger and its head shape resembles a pompadour similar to Josuke. It could also have been chosen as a reference to Killer Queen due to its explosive attacks, as hinted by the quest description. Additionally, if you kill 50 Brachydios, you get the title "pompadour" referencing Josuke. The name of the quest is also a reference to Diamond is Unbreakable.

When these items were localized outside of Japan, they were re-skinned and renamed. The "Crazy Diamond" hammer was renamed to the "Majestic Hammer" and had its design changed completely. Meanwhile, the "Stand Mask" was only renamed to the "Cosmetic Mask."