Anniversaries/December 6
From Sonic Retro
December 6 (add)
- 2003 — "That's What Friends Are For", the 14th episode of Sonic X, airs in North America.
- 2005 — Sonic the Hedgehog is released for i-mode 90x devices in Japan.
- 2014 — Dairantou Smash Brothers for Wii U is released for the Wii U in Japan, featuring Sonic as a guest fighter. "Eggheads", the 8th episode of Sonic Boom, airs in North America.
- 2023 — Issue #67 of the Sonic the Hedgehog comic series by IDW Publishing is released in North America.