An ally of the turtles discovers that they have a common enemy and decides to take him down once and for all, choosing Raphael to be his sidekick. The question is, exactly who is the sidekick... and who will prove to be the hero? Marvelverse crossover.

Marvelverse crossover Spider-Man receives reports of a sighting of a giant turtle in a mysterious new Halloween store and checks it out. This leads him into a complicated mess involving missing turtles, evil spirits and, of course, the end of the world

Marvelverse crossover While protecting his beloved NYC, Spider-Man comes across four strange sewer-dwelling creatures with a problem. Unfortunately for the Amazing Wallcrawler, it becomes HIS problem soon enough.