101Leafy researched the games.
Growling Wyvern

Ultimate Steel Spear. Strong enough to defend the fort against any calamity.
| Class | Lance |
|---|---|
| Rarity | 4 |
| Attack | 345 |
| Dragon | 100 |
| Defense | +10 |
| Slots | 1 |
| Table price | 4,900z |
Upgrades
| Upgraded from | Rampart |
|---|---|
| Upgrades into | Roaring Wyvern, Knight Lance |
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 744.
Materials
Plus Class Tcket ×1, Blk Gravios Shl ×1