Jaleel White as Steve Urkel / Urkelbot / Stefan Urquelle (voice)

Joel Kim Booster as Clerk Gary (voice)

Nicole Byer as Sheryl (voice)

Tiana Camacho as Robin / Child (voice)

Arturo Castro as Dudley / Robin's Dad (voice)

Zehra Fazal as Suli (voice)

Mitra Jouhari as Clerk Leslie (voice)

Wayne Knight as Mr. Hodges (voice)

Thomas Lennon as V.D.I. (voice)

Larry Owens as Santa (voice)

Jay Pharoah as Jay-Z (voice)

Dana Snyder as Mr. Kalan / Bus Dispatch (voice)

Brian Tochi as Mr. Kochiyama (voice)

Janet Varney as Old Lady Buechler / Amber / Woman (voice)

Kym Whitley as Mrs. Paxton (voice)

Michael-Leon Wooley as Dream Santa / Plastic Reindeer (voice)

Roy Wood Jr. as Department Store Santa / Old Man Buechler (voice)

Miki Yamashita as Mrs. Kochiyama / Neighbor (voice)

Dallas Dupree Young as Jordan (voice)