Guiyii (A.K.A Gweeyiibert Weegee Marreoh) is a retarded mind rapist version of Weegee made by Tachin1994, that appeared in various Brottas related series/videos.
As shown in "The Birth Of Guiyii", Weegee (a 4chan Mario meme) out of pure boredom decided to look himself with a mirror. Nothing interested happened, but after a few minutes, the mirror began to corrupt Weegee's appearance resulting into Guiyii. Eventully, this corrupted Weegee became alive and mindfucked Weegee, killing him. After this, Guiyii became the new Weegee.