Hey Arnold! - Season 4 Episode 2
Helga's sister Olga comes home for spring break and becomes a classroom aid in Helga's class, much to Helga's chagrin.
- Zhanri: Family, Animation, Comedy, Kids
- Studio: Nickelodeon
- Fjalen: 90s’ animation
- Cast: Spencer Klein, Francesca Marie Smith, Jamil Walker Smith, Olivia Hack, Anndi McAfee, Justin Shenkarow
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