Kevin Sussman

as Stuart Bloom

as Cancer Scam Victim

as Supernerd

as Neil

as Tuchman Marsh Man

as Phil Redmond

as Kevin

as Lenny

as Mac Bailey

as Tiny Shorts Guy

as Barry Lowenstein

as Don

as Tyler Cohen

as Dwayne

as Terry

as Colin

as Agent Kevin Saxton

as Steve

as Joe

as Shakey (voice)

as Stan

as Walter Pine

as Phil Hobart

as Mark Roessler

as Ira

as Walter

as Calculator Guy

as Tuba Guy

as Stuart Bloom / Alternate Stuart Bloom

as Steve

as Commercial Director

as Dave

as Daffy Giraffy

as Alan Joseph Zuckerman

as Skeeter

as Denis Slater

as Ras

as The Palindrome / Ivan Avi

as Benny

as Lenny

as James

as Andy (voice)

as Scott Belcher / O.C.D.

as Caesar

as Pursuit Disk / Clark (voice)

as Bipolar Man

as Self