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| Series | Sonic Boom (TV series, 2014–2017) |
| Season | Season 2, episode 43 (S02E43) |
| Episode no. | 95 of 104 |
| US premiere | 2 September 2017 · Boomerang |
| France | 27 September 2017 · Chaîne de lettres |
| Written by | Peter Saisselin |
| Storyboard | Gael Leroux & Milena Mardos |
| Directed by | Natalys Raut-Sieuzac |
| Previous | If You Build It They Will Race (S02E42) |
| Next | Vector Detector (S02E44) |
Chain Letter is episode 43 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 2 September 2017 on Boomerang.
Synopsis

A chain letter warns Eggman of eternal bad luck unless he forwards it to three friends, and he has none. Orbot and Cubot follow him on FriendSpace, only to mock his remote-control mishap and send it trending, and the villagers are no better: Redd Heron has no internet, the Rabbit Girl says FriendSpace is over, and the Old Monkey has no idea what a friend request is.
Sonic says no as well, then changes his mind when Tails points out the spying opportunities. Big mistake. Sonic gets the chain letter, then an endless stream of shared posts that pings over lunch and in the middle of a scrap with T.W. Barker’s Stunt Bears, until he unfriends Eggman for good.
So Eggman launches his own social network, Scrambler, and bans Sonic. It flops until the Rabbit Girl decides it’s ultra-exclusive and brings three thousand friends. Soon the whole village chats online instead of in person, and a left-out Sonic begs to join, promising to comment on every post. Eggman lets him in, unfriends him for revenge, enjoys the rush so much that he deletes Scrambler, and settles for real-life enemies instead of friends.
Trivia
- On DVD in the US: NCircle’s Season Two, Volume Two (September 2021), The Complete Season 2 (2021) and The Complete Series Blu-ray (2022).
- French title: Chaîne de lettres. The episode aired in France on 27 September 2017.
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.

