Thundarr the Barbarian - Season 1 - Eps 1: Secret of the Black Pearl
After saving a old man named Tyron from the rat-like Groundlings, Thundarr, Ariel and Ookla learns that the Groundlings are in search of The Black Pearl, which the evil wizard Gemini fears it's power. Thundarr, Ariel and Ookla agrees to deliver the Black Pearl to the village of Manhat (the ruins of Manhattan). But Ariel is captured and taken to Gemini's tower and Gemini demands that Thundarr and Ookla gives him the Black Pearl or Ariel will die.
About Thundarr the Barbarian

Title: Thundarr the Barbarian
First Air Date: 1980-10-04
Last Air Date: 1981-10-31
Status: Ended
Rating: 6.7/10 (from 24 votes)
Language: EN
Seasons: 2
Total Episodes: 21
Network: NBC
Genres: Animation, Sci-Fi & Fantasy, Action & Adventure
Production Companies: Ruby-Spears Productions
Synopsis
Thundarr and his companions Ariel and Ookla wander a devastated future Earth and fight evil wherever they find it.
Cast

Robert Ridgely
Thundarr (voice)

Henry Corden
Ookla the Mok (voice)

Nellie Bellflower
Princess Ariel (voice)

Dick Tufeld
Narrator (voice)