Fierce Grarrl Helmet
Can be equipped, but does completely NOTHING. No attack, no defence, no drain, nothing.
[EDIT] Oops, not supposed to be chatting about the weapons here, mods please delete

Another glitch? Is it possible that TNT simply forgot to activate it?
Hrm, never thought about that kalfeer. It definitely seems like a glitch. Perhaps there are special circumstances that will allow the weapon to work (only used against Grarrls or stat maximum/requirements).