Ooh! This is a very neat idea, Mr. Squish.  
If they “did it” with someone while in their fused form, would that count as a foursome, or would that only be if they were all separate?

This must be their version of Splatoon.

Reminded of those red, green, and blue ChuChus from Wind Waker, hm.
 
Quickly, shine a beam of light on this one!

I hope you’re going to name all of them and give their fusion a name.