i like the idea that....if the ever make a mob psycho 100 FIGHTING game... that the color-swap player 2 of every single esper boy (mob,ritsu,teru and shou) is an alien ( come on! let tome be happy!!!!) that has shape shifting powers, minor power mimicry, as well as ridiculous brute strength and no psychic powers what-so-ever.
and even though the thing has no gender..it has a fascination with things considered feminine by earthly standers .(earrings, nail polish, cutesy things, jewelry, make up ,ankle bracelets, elegant yet girly movements,occasional ballet and gymnastic moves and sounding really feminine and high pitched)
and maybe it could be involved in the main story...like it causes trouble across seasoning city under mob's appearance..... but when mob arrives to stop the impostor. it will yell in disappointment...and it doesn't reveal it's face..instead it adds it personal touch to it's "mob impersonation "(like getting rid of mob's original colors and replacing it with it's natural colors just. like the pic and wears it's beloved accessories) and the fight begins...it does the same thing to ritsu, teru and shou