MG3 was one of M@r1o's least favorite people to hang out with due to their edgy and mean vibes towards him. When M@r1o became who he was. MG3 was taking a walk with Eggdog. Sadly, during that walk Eggdog got smashed by M@r1o's feet. Leaving only squished flesh and a skull.. When M@r1o kills and corrupts MG3 he wore the skull to remember his pet forever.
