Fudgerick is one of the NPCs that can spawn by using an Amani Hex Stick on one of the wandering Forest Frog within Zul'Aman. Once spawned, he will walk to the entrance of the instance and cheer you on when you walk by.
If you freed Fudgerick he will bring a barrel to the bottom of Zul'jin's platform containing an unlimited amount of large and small rockets that require a firework launcher, which he also provides. You must kill Zul'jin before he will bring the fireworks.
See Zul'Aman NPCs.
Patches and hotfixes
Patch 2.3.0 (13-Nov-2007): Added