101Leafy researched the games.
Bull Head Hammer

Oriental in origins, this Hammer is made from hard charging Bulldrome.
| Class | Hammer |
|---|---|
| Rarity | 3 |
| Attack | 624 |
| Slots | 1 |
| Table price | 2,150z |
Upgrades
| Upgraded from | Bull Hammer |
|---|---|
| Upgrades into | Bull Tusk Hammer |
Upgrade tree from モンスターハンターポータブル 2nd G 公式ガイドブック (Enterbrain, 2008), page 724.