One thing you may have noticed if you have read Megatokyo both online and in the dead tree versions is that there are quite a number of comics in the archive here that appear to be unfinished but show up in Megatokyo Volume 6 in finished, fully hatched and rendered form. Most of these were from the first year of having a new baby in the house and just getting a comic posted was a major feat, but i DID have to finish them for the book. As with many things on this site (coughcharachterpagecough) The one thing i never did was go back and update the web-versions of these comics with the finished, fully hatched versions.
This flashback tells the story of something that the characters have alluded to in the comic at various times. I’ve always called this kind of thing Implied Past. Colloquially they are called Noodle Incidents. Implied past allows characters to seem like they’ve lived complete lives without having to stop and explain every exploit in the middle of the current story. I don’t typically write backstory off handedly. If a character mentions something I’ve worked out enough of the story so that if it ever became important said character could relate the tale. Between Failures