Hey Arnold! ยท S04E02
Student Teacher
Summary
Helga's sister Olga comes home for spring break and becomes a classroom aid in Helga's class, much to Helga's chagrin.
Guest stars
- Maurice LaMarche as Big Bob Pataki (voice)
- Kath Soucie as Miriam Pataki (voice)
- Nika Futterman as Olga Pataki (voice)
- Dan Butler as Mr. Simmons (voice)