Doctor N. Tertain is one of the doctors in the evil doctors' group in Cortex Chaos. His name explains he's a clown scientist and his name is a pun on "entertain".
|Main Characters||Doctor Neo Cortex | Nina Cortex | Cortex clones|
|Known Doctors||Doctor N.Tangle | Nitros Oxide | Doctor N. Gin | Doctor Nitrus Brio | Doctor Nefarious Tropy | Doctor N. Tombed | Doctor N. Tertain|
|Weapons||Cortex's Ray Gun | Bomb-Zooka | Magnet Magum | Teleporter Ray|