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| Series | Adventures of Sonic the Hedgehog (“AoStH”), first-run syndication |
| Episode | Episode 51 of 65 in production order (code 238-151) · aired 40th · WildBrain no. 151 |
| First aired (US) | 29 October 1993 · syndication |
| Written by | Jeffrey Scott |
| Directed by | Kent Butterworth |
| Sonic Says | Electrical appliance safety |
| Previous | Robotnik’s Pyramid Scheme |
| Next | Baby-Sitter Jitters |
Chaos Emerald saga, part 4DinosaursRobotnik triumphant
Prehistoric Sonic is episode 51 of Adventures of Sonic the Hedgehog in production order (production code 238-151), the order used by the DVDs, WildBrain’s official uploads and our episode guide. It was the 40th episode to air in the 1993 syndicated run, on 29 October 1993. It was written by Jeffrey Scott and directed by Kent Butterworth.
Synopsis
Escaping a battlefield in their time machine, Robotnik and his robots head for prehistory and the Emerald of Life, which can bring anything to life. Scratch dreams of becoming a real chicken; Grounder is not sure what he would become.
Sonic is playing beach volleyball when Professor Caninestein arrives yet again, this time with a time-travelling skateboard. In the age of the dinosaurs, Robotnik turns the local beasts into robot dinosaurs, and Sonic organises the cave people to defend the emerald on the volcano.
Despite the heroes’ efforts, Robotnik reaches the emerald – and with all four Chaos Emeralds together, he becomes an all-powerful being, and Sonic has to find a way to bring the supreme Robotnik down before the saga is over.
Key Moments
- Scratch wants the Emerald of Life to make him a real chicken.
- Robot dinosaurs in prehistoric Mobius.
- Robotnik unites all four Chaos Emeralds.
Sonic Says
Sonic explains how to use electrical appliances safely.
Every episode’s segment is listed on the series page.
Trivia
- The end of the four-part saga, aired 29 October 1993 – a Friday, closing out a full week of time travel.
- Jeffrey Scott also wrote Robolympics, Magnificent Sonic, Black Bot the Pirate, Hedgehog of the “Hound” Table, Robotnik’s Pyramid Scheme, Baby-Sitter Jitters, Honey, I Shrunk the Hedgehog, Robotnikland, The Mobius 5000, The Little Merhog and Road Hog.
Watch the Episode
The full episode, from WildBrain’s official WildBrain Hero Tower channel on YouTube (checked 6 November 2026).
Part of our Adventures of Sonic the Hedgehog episode guide. See the series page for the show’s history, cast, Sonic Says and home video.
Sources: production code, air date and writer from Sonic Wiki Zone’s episode list (codes from the US Copyright Office record), Wikipedia and Sonic Retro (Wayback copy), cross-checked against Luke’s 2017 list and the on-screen title card; synopsis written for Sonic Scene from the episode and these summaries; title card via Sonic Retro and screenshots via Sonic Wiki Zone, copied to our media library.