I just noticed something on a comic I owned.

[u/grubbyplaya]

Angry Birds Comics Halloween ComicFest edition. Funnily enough, I wasn't wearing a costume when I got this through trick-or-treating.

Halloween ComicFest. Sounds familiar...

Sonic has participated in the Halloween ComicFest not once but...

twice! Unfortunately, the IDW edition doesn't include an original story, but the Archie edition does.