Ah, I didn't make this; I'm not nearly as good with computer graphics (aka, I suck).
The first one I noticed was Ueda and had a freak attack. I was all 'omg, WHAT'S MARU'S FACE DOING ON UEDA'S BODY?!' XD

Koki's face blended perfectly with Kame's body. It's prob becuz they have a similar height/size, but I'm going to go with the fact that it's ~KoKame~ xP