(Sorry this is very late!)
There are so many to count, this isn't even all of them! XD
Anyway... Good lord it took me forever to just draw/color them all...
Miscount, there's 15 not counting the original. XD
Sheesh!
Anyway, this is a present for @sans-serif-gaster/scud/Lps!
Enjoy! XD
From F/B to L/R:
Alt. Ren
Pirate Ren
Rendelle/"Delle" (GB)
"Talo" Ren
B.C. (Black Cat Ren)
Butler Ren
Robot Ren
Arch(eologist) Ren (used to be SHAU Ren)
Guinea Pig Ren
Goldfish Ren
Ren the VII