Okay but if you think about it… If Peter hadn’t become a Death Eater, the Potters would have lived, Sirius wouldn’t have gone to Azkaban and would have married Remus at some point, Jily would have a few more kids after Harry (making Remus and Peter godparents too) and Wolfstar would have adopted their fair share as well (or gotten themselves a surrogate… or both) and so Peter would be the godfather to both a Potter kid and a Lupin-Black kid.
Usually, I would assume, when the kids wanna prank Lily or Remus they ask James and Sirius’ help, if they wanna prank Sirius they ask for James’ help and if they wanna prank James they ask for Sirius’ help. But on those occasions when they want to prank James AND Sirius AND Remus AND Lily who are they gonna call? Cool uncle Peter of course.
Peter usually sits on the sidelines just watching the prank wars rolling and helping here and there when needed but when the kids ask him to help planning… oh boy when the kids ask him to help planning…
No one ever sees it coming and the kids have a blast. And James, Sirius and Remus can’t even pull themselves to get mad when they get glued to the ceiling, or when their clothes were gone after an animagi run, etc etc… Lily also gave up on getting upset and trying to ground them because on the positive side, they were learning new spells every time.