Martin Spivak

Dr. Martin "Marty" Spivak is a former telemarketer for NeverBetter Insurance. Martin was later the host of one of Buster's favorite shows called The Factoid Front before it was cancelled.

Personality
Martin likes his coffee black with five sugars.

Arthur

 * 801b. "Bitzi's Break-up"
 * 1105b. "Strangers on a Train"
 * 1501. "Fifteen"
 * "Buster Isn't Buying It"

Trivia

 * Even though Martin originally only existed in Buster's imagination, he has been seen in reality on multiple occasions since then.
 * CBBC spells his name as Martin Spivack in the closed captions for "Buster Isn't Buying It".