Just the average protagonist from the rhythm game Friday night Funkin, but as a Galoomba from Super Mario World (From the fnf mod Mario's Madness)

Somari appears similar to Mario in Super Mario Bros. 3, except his clothes are a lighter color than normal and he wears Sonic-styled shoes. His body shape lines up more with Sonic's appearance. His poses bear a resemblance to Sonic's poses in certain pieces of promotional artwork.

A bootleg of a mixture of Sonic And Mario 

Cosmic Boyfriend's physical shape is identical to Boyfriend, but its external appearance sets it apart. It is bathed in a shade of blue speckled with star-like spots, resembling space, and his eyes are glowing red.

Cosmic Clone BF

N0R is an NPC in PIG 64 and the main antagonist of its sequel. They are aware of the fact that PIG 64 isn't real and is a simulation. He is the enemy, he is saying that the player left him behind and that he'd go research. He believes at first sight that you are "Ronald" (creator of Pig 64) by your username being "RONAlt" but you are Charlie undercover, and Ronald is really dead.
He is harmful to the player saying things like "we could have escaped together" and "I wanted to break free with you"