Hey Arnold! Grandpa's Sister/Synchronized Swimming (Season 4, Episode 12)
TV-Y7
TV Episode | 24 min | Animation, Comedy, Family

Primary photo for Grandpa's Sister/Synchronized Swimming

Hey Arnold!

Grandpa's Sister/Synchronized Swimming (Season 4, Episode 12)

TV-Y7

TV Episode | 24 min | Animation, Comedy, Family

Grandpa's sister, Mitzi, shows up out of the blue to grace the boarding house with her presence./When Coach Wittenberg needs to form a synchronized swim team to save his job, he recruits Arnold, Gerald and the rest of the gang to compete.

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Cast	+ Add Cast
15 cast members

Name	Known for
Spencer Klein Arnold (voice) Arnold (voice) See fewer	Jingle All the Way (1996)
Lori Alan Announcer (voice) Announcer (voice) See fewer	Inside Out (I) (2015)
Jim Belushi Coach Wittenberg (voice) (as James Belushi) Coach Wittenberg (voice) (as James Belushi) See fewer	Red Heat (1988)
Dan Castellaneta Arnold's Grandpa (voice) Arnold's Grandpa (voice) See fewer	The Simpsons (1989)
Toran Caudell Wolfgang (voice) Wolfgang (voice) See fewer	Recess: School's Out (2001)
Baoan Coleman Mr. Hyunh (voice) Mr. Hyunh (voice) See fewer	Rambo: First Blood Part II (1985)
Phyllis Diller Mitzi (voice) Mitzi (voice) See fewer	A Bug's Life (1998)
Ben Diskin Eugene Horowitz (voice) Eugene Horowitz (voice) See fewer	Kindergarten Cop (1990)
Sam Gifaldi Sid (voice) Sid (voice) See fewer	The Mommies (1993)
Dom Irrera Ernie Potts (voice) Ernie Potts (voice) See fewer	Barnyard (2006)
Tress MacNeille Arnold's Grandma (voice) Arnold's Grandma (voice) See fewer	The Simpsons (1989)
Cathy Moriarty Tish Wittenberg (voice) Tish Wittenberg (voice) See fewer	Raging Bull (1980)
Justin Shenkarow Harold Berman (voice) Harold Berman (voice) See fewer	The Mitchells vs. the Machines (2021)
Jamil Walker Smith Gerald Johanssen (voice) Gerald Johanssen (voice) See fewer	The American Dream (2011)
Christopher Walberg Stinky Petersen (voice) Stinky Petersen (voice) See fewer	Little Giants (1994)