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| Series | Adventures of Sonic the Hedgehog (“AoStH”), first-run syndication |
| Episode | Episode 56 of 65 in production order (code 238-156) · aired 60th · WildBrain no. 156 |
| First aired (US) | 26 November 1993 · syndication |
| Written by | Jeffrey Scott |
| Directed by | Kent Butterworth |
| Sonic Says | Matches |
| Previous | The Mobius 5000 |
| Next | Road Hog |
UnderseaGuest: Merna the MerhogCaptain Memo
The Little Merhog is episode 56 of Adventures of Sonic the Hedgehog in production order (production code 238-156), the order used by the DVDs, WildBrain’s official uploads and our episode guide. It was the 60th episode to air in the 1993 syndicated run, on 26 November 1993. It was written by Jeffrey Scott and directed by Kent Butterworth.
Synopsis
Sonic and Tails are fishing when they hook Merna the Merhog, who begs for their help. Diving after her in scuba gear, they find Captain John Paul Memo and his sidekick in a giant squid-shaped submarine, planning to flatten her city of Mertopia, build condos and charge the fish rent.
Sonic anchors the sub and Merna summons electric eels to free them from its tentacles, but the attack goes on. Sonic’s idea is to set one villain against another: he and Tails visit Robotnik’s fortress and convince the doctor that Memo is coming for him next.
Robotnik launches his own submarine – redesigned in turn to look like Grounder, Scratch and finally himself – and opens fire on Memo. But having seen the undersea world, he decides to conquer it himself, and Sonic, Tails and Merna, with help from the sea creatures and the Mer-people, have to see off both villains.
Key Moments
- Tails hooks a mermaid hedgehog.
- Captain Memo’s plan to turn Mertopia into rental condos.
- Robotnik’s submarine, redesigned three times over.
Sonic Says
Sonic warns kids never to play with matches.
Every episode’s segment is listed on the series page.
Trivia
- Robotnik and his robots only join the story halfway through, brought in by Sonic’s own trick.
- Jeffrey Scott also wrote Robolympics, Magnificent Sonic, Black Bot the Pirate, Hedgehog of the “Hound” Table, Robotnik’s Pyramid Scheme, Prehistoric Sonic, Baby-Sitter Jitters, Honey, I Shrunk the Hedgehog, Robotnikland, The Mobius 5000 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.