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| Series | Sonic Boom (TV series, 2014–2017) |
| Season | Season 2, episode 29 (S02E29) |
| Episode no. | 81 of 104 |
| US premiere | 27 May 2017 · Boomerang |
| France | 9 April 2017 · Les robots venus du ciel – partie 4 |
| Written by | Alan Denton & Greg Hahn and Bill Freiberger |
| Storyboard | Jordi Valbuena |
| Directed by | Natalys Raut-Sieuzac |
| Previous | Robots from the Sky: Part 3 (S02E28) |
| Next | Flea-ing from Trouble (S02E30) |
Robots from the Sky: Part 4 is episode 29 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 27 May 2017 on Boomerang.
Synopsis

Mission accomplished, Sonic wants to leave, until Amy calls and the robots tease him about a girlfriend, so he stays for the tour. Bad timing. Eggman has thawed Hypnobot, fitted him with a neck-mounted gun and bonded with him over their shared grudge, and the pair lead the re-hypnotised robots, Eggman’s included, on an invasion of the city in the clouds. Knuckles, Amy and Sticks follow by clinging to an entranced FriendBot.
The odds are hopeless, and when Hypnobot re-infects the citizens, Mighton included, the heroes retreat to the lead-lined bunker. Bolts’ answer: only organic brains are immune, so build more fighters that have them. After some persuading, Sticks lends her DNA too, and out comes Team Cybonic, cyborg copies of all five.
Side by side, heroes and doubles carve through the robot army, and Sticks warms to her twin. Then the hypnotised Mighton’s rocket punch catches Sonic’s injured leg, and Hypnobot orders a finishing blow. This time Tails doesn’t hesitate: he knocks his creation’s hypno-ray off with a wrench, and Mighton’s fist stops just short. Eggman flees, Team Cybonic stays on as the city’s guardians, the robots give their home a catchier name, and Tails flies everyone home.
Trivia
- The last part of the only four-part story in the series. All four parts are on NCircle’s Robot Uprising! DVD (2020).
- Team Cybonic return in “Victory”.
- On DVD in the US: NCircle’s Season Two, Volume One (May 2021), Robot Uprising! (2020), The Complete Season 2 (2021) and The Complete Series Blu-ray (2022).
- French title: Les robots venus du ciel – partie 4. The episode aired in France on 9 April 2017, before its US premiere.
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.

