Who played the voice of adicator in hey Arnold?

The voice of Adicator in Hey Arnold! was provided by Tress MacNeille. She also voiced a number of other characters on the show, including:

* Miss Slovak

* Stoop Kid's Mother

* The Principal

* Olga Pataki (sometimes)

Tress MacNeille is a very prolific voice actress with a long and distinguished career. She's known for her roles in many animated shows and movies, including:

* The Simpsons (Agnes Skinner, Selma Bouvier, Lindsey Naegle, and others)

* The Critic (Doris Grim)

* The Powerpuff Girls (Ms. Keane)

* Rugrats (Angelica Pickles' Mom)

* Animaniacs (Dot Warner)

* Family Guy (Lois Griffin, Tricia Takanawa)

She is also a talented actress in live-action roles and has done a lot of work in theatre.