long, long ago I had my own little yugioh story and in it...certain side characters had past lives that didn't in canon. I was never able to create/draw what they looked like sooo i guess i'md oing that now!

This is Rex Raptor's past life, Reoku (Ree-oh-koo). He was a follower of my self insert's past life, simply known as Snake God who was...a goddess of dragons? I think she was called Snake God because her dragon form resembled that of a snake more than a dragon, and her item was the Millennium Snake.
Being a follower of Snake God you got your very own Dragon form! This was Reoku's hybrid/mixed form (now updated since i have a somewhat understanding of how design works).

Obviously Reoku was taller than Rex. He was also the strongest of her human followers. There were 2 others that followed Snake God, we'll see if I decide to make pages for them............

art, character concept © me,  CandyDragonGuts