Antoinette Stella (born September 17, 1952) is a writer. She mainly contributed in the second and third seasons, but only occasionally wrote episodes that proceeded. She also voiced Arnold's mother, Stella, who is named after her.
- 33b. Eugene's Pet
- 35b. Phoebe Cheats (Written only)
- 37a. Steely Phil (Story only)
- 38b. Rhonda's Glasses
- 40. Arnold's Halloween (Written only; with by Craig Bartlett and Joseph Purdy)
- 41a. The Aptitude Test
- 43b. Olga Gets Engaged
- 46b. Helga and the Nanny
- 56. Arnold's Thanksgiving (Story only; with Craig Bartlett, Joseph Purdy and Steve Viksten)
- 58b. The Flood
- 60. Parents Day (with Craig Bartlett)
- 86b. Sid and Germs
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