I think you should get a container and then put different types of Mr. Meeseeks into the box and keep it for different episodes and whenever you want to do use the one with you as well
Sometimes when meeseeks explodes his hair falls on the floor on some guys video the hair flashed blue like you could grab it but the guy never did could you see if you can grab it and do anything with it
Reason there's another you in that other side is in order to make "mirror" effects, most designers/animators take and duplicate your character's movements/actions or anything else and flip it around in a separate room. So, when you look into a mirror you're actually seeing another you in the mirror... not a reflection.
i remember season 2 i dont know the episode the minishow after the credits when jerry ate the eyeholes and the eyehole man came and everybody started freaking out and morty said why would you even eat that
you should see if you can get a youseeks to close the portal wall while in another area or try and change the area the portal goes to hope I can get featured