N. Brio

Dr Nitrus Brio was once Dr N Cortex's assistant, but rebelled and returned to his previous profession as a bartender.

Early Years
Brio first appeared in Crash Bandicoot, where he drinks a potion transforming him into a Hulk-like monster. Crash hit him three times on the head and knocked him out. After he returned to normal and regained his senses, he left Cortex to work at a bar.

Life After Cortex
However he got wind of Cortex's plan to use crystals to destroy the planet. He enlisted Crash's help to gather gems and power a laser which could destroy the Cortex Vortex.

Strangely enough, Brio reappeared in Crash Bash as a villain even though he had turned to the good side. It is likely that he was merely working under the instruction of Uka Uka.

He reappeared in Crash Twinsanity with N Tropy to get rid of the Evil Twins, but is thwarted when Spyro the Dragon blows fire at them.