A... Scoobyverse?

 

This is not a real thing, but I kinda wish it was.  I enjoyed the Titans crossover with the Titans movie, they did some really clever bits, though I wish they had acknowledged all the other Titans that have been in the group.  Oops, I have digressed yet again.  Be that as it may, once again, this does not exist.  It could really work, though, since the two big bads would pretend to work together at first and cross universal boundaries.

However, you really couldn't have too many Scoobies, as it would get really confusing.  The toon Titans look different enough to keep them separate.  I think there is a comic book story that does have many different iterations of the Scoobies team up, but I am not sure.