Gamma x the Edge
Tatsuya x Kazuya
Joker x Mishimadmin

Still
Inari x Aki-Joker

Outsite of that:

Lightning x Kazuya
Bluehairedemo x Robotwaifuaigis
Does Mona x Sleep count?

I've said it everywhere else, might as well say it here...

Shiza x His hand

@Starwaddle x @jokerboi

Also me x myself x I

Shinji x Aqua
Lightning x Kaz