In the past the Ghostbusters have crossed over with the Ninja Turtles, the X-Files, the cartoon version of themselves, the 2016 team, and now... THE TRANSFORMERS!
This now makes me wonder what franchise they'll crossover with next in the comics... Batman? Hellboy? Spawn? Heck, at this rate I wouldn't be surprised if they crossed with Sonic the Hedgehog or MY LITTLE PONY!
First issue's coming out in June, so we won't have that long to wait!