![]() | |
| Series | Sonic Boom (TV series, 2014–2017) |
| Season | Season 2, episode 24 (S02E24) |
| Episode no. | 76 of 104 |
| US premiere | 22 April 2017 · Boomerang |
| France | 9 April 2017 · Le frère caché d’Eggman |
| Written by | Marine & Cedric Lachenaud |
| Storyboard | Jean-Charles Andre |
| Directed by | Natalys Raut-Sieuzac |
| US viewers | 0.17 million (Nielsen, premiere) |
| Previous | Nominatus Rising (S02E23) |
| Next | Do Not Disturb (S02E25) |
Eggman’s Brother is episode 24 of Season 2 of Sonic Boom, the CGI comedy series made by Technicolor Animation Productions with Sega of America. It premiered in the United States on 22 April 2017 on Boomerang.
Synopsis

Sonic’s habit of beating every robot before his friends get a turn is wearing thin when a stranger knocks at Eggman’s door: Steve Eggman, blond and claiming to be the doctor’s long-lost brother. Eggman throws him out. Steve promptly saves Sonic from Decimator Bot’s freeze ray, and Sonic signs him up for the team without asking anyone.
The others stay wary, even after Steve rescues Gogobas from a lava flow. Then the friendships start to crack. “Sticks” talks Knuckles into exile, “Tails” scares Sticks off with talk of a government watch list, “Amy” tells Sonic the team thinks he’s running it into the ground, and “Sonic” tells Tails they all need a break. Every one of them is Steve.
The truth: Steve is Morpho, a shapeshifter built by another universe’s Eggman, who destroyed that world, and wrecking Team Sonic was meant to win over this Eggman. With Sonic isolated, they attack, but Tails never believed Sonic would give up on his friends, and his digging finds Amy glued down in the forest. The team rides to the rescue, and Eggman is so taken with the absurdly convoluted scheme that he wishes Morpho really were his brother.

Trivia
- Morpho, voiced by Roger Craig Smith, returns as the villain of “Where Have All the Sonics Gone?” and in “Eggman Family Vacation”.
- On DVD in the US: NCircle’s Season Two, Volume One (May 2021), The Complete Season 2 (2021) and The Complete Series Blu-ray (2022).
- French title: Le frère caché d’Eggman. The episode aired in France on 9 April 2017, before its US premiere.
- About 0.17 million US viewers watched the premiere broadcast (Nielsen figures as listed by Wikipedia).
Watch the Episode
NCircle Entertainment, the show’s US home-video label, has not uploaded this episode on its own to YouTube at the time of writing, though its official channel carries two-episode compilations and Season 2 marathons. Season 2 is on DVD from NCircle (The Complete Season 2, 2021) and has been on Hulu and Netflix; see the series page for details.
Part of our Sonic Boom Season 2 guide. See the series page for the cast, the redesigns, the games and the comics.
Sources: air dates, writers and storyboard artists from Luke’s original Sonic Scene episode list, cross-checked with Wikipedia, Sonic Retro (Wayback copy) and Sonic Wiki Zone; synopsis written for Sonic Scene from the episode summaries on those sites; title card and screenshots via Sonic Wiki Zone, copied to our media library.

