Gremlin Stick, known (roughly) as "Cane of Curse" (呪いの杖 Noroi no Tsue) in Japan, is a item from Gargoyle's Quest and Gargoyle's Quest II.
In Gargoyle's Quest, Firebrand must obtain it for Barone Jark so he can recover his power.
In Gargoyle's Quest II, the Gremlin Stick is required to unseal King Barr's power.