Sulfur Pot

Sulfur Pot is very cocky and confident in his skills. He is especially like this when he has his pet "Nick" with him as he states that he is invincible. He treats Nick as a tamed monster pet and can confidently command him to do his bidding. However, this becomes his downfall as he is betrayed by the same monster that he thought of as his pet.

(Source: Accel World Wiki)