Burpy is an Infurnus Slug. He was part of Will Shane's arsenal until he was sent to find Eli right before Will went

Burpy, an Infurnus Slug.

missing. He's Eli's faithful companion, an ultimate fire-based weapon and master slug strategist. He's also the general to Eli's army of slug buddies. Extremely loyal to Eli and cleverer than your average slug, Burpy's got slug moves most people have never even seen before like fire wall!