Man Aafyre... Genosect...
Why do you do this to me!?
Not me. And I won't replace him ever... Although I never perma replace anyone. Due to being on Wifi often.
Honestly...
Aaf, put him over whoever you want. It should be interesting either way. The only odd thing about ROB, would be... How much he spins unnaturally. Plus his arms would move really oddly during some animations.
^This.
ROB's bones are really weird.
Although this may sound ridiculous at first, but I'd suggest having him on Bowser for a few reasons:
1) His shell can be used for Genosect's high-speed mode.
2) Genosect's motions would kinda fit Bowser in a weird way.
3) Have Genosect's cannon rotate off of bowser's head, so that It functions well with Bowser's Flame Breath. So that his cannon looks like it's shooting the fire. It'll be cool.
Plus, he doesn't have any pokemon hacks does he?
I'm obviously kidding