Mary is a fictional character in the Hey Arnold! TV Series.
In the episode "Helga's Makeover" she is one of the Rhonda's "Slumber party" guests.
In the episode "Operation Ruthless" she can be seen crying after the line for the Tunnel o' Love ride dissolves into chaos.
- April Fools Day
- Career Day
- Helga's Makeover
- Helga vs. Big Patty
- It Girl
- Operation Ruthless
- Roller Coaster
- Sid And Germs
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