- "The Battle for Angel Island," Part Four. The thrilling conclusion to the Battle of Angel Island saga! As Sonic and his friends work to restore Angel Island, two questions remain: is Neo Metal Sonic truly defeated, and what other trouble is brewing?
- The cap on IDW's first year of Sonic the Hedgehog adventures-and the lead-in to year two!
- An old foe returns...
The Cost of the Battle for Angel Island
- This issue was initially planned for released on 19 December 2018 but was delayed to January 2019 due to a change in the release schedule for the series.
- Cover B is laid out as concept artwork of Dr. Starline.
- ↑ 1.0 1.1 Matt Herms on Twitter. Twitter (7 December 2018). Retrieved on 7 December 2018.
- ↑ 2.0 2.1 2.2 2.3 SONIC THE HEDGEHOG #12 CVR A STANLEY. Previews World (19 September 2018). Retrieved on 19 September 2018.
- ↑ SONIC THE HEDGEHOG #12 10 COPY INCV FOURDRAINE. Previews World (19 September 2018). Retrieved on 19 September 2018.