Martin Spivak

Martin Spivack is a boring, whiny telemarketer for Neverbetter Insurance. Martin telemarkets at dinnertime and likes his coffee black with five sugars.

Even though Martin was originally a fantasy character that only existed in Buster's imagination, he has been seen as a background character on multiple occasions since then.

Arthur

 * 801b. Bitzi's Break-up
 * 1105b. Strangers on a Train (cameo)
 * 1501. Fifteen (cameo)