I was wondering for a while if I want to make an OC, but settled on just using Roll.EXE, since she was my favorite Rockman.EXE 4.5 navi.
This version uses sprites from Sprite-inc.co.uk, but also has a few Custom Sprites made for her for combat and mining, so that she fits the BERSERK B.I.T.S. style. (someone made a version that used her Combat Sprites, but they were a bit too large for me)
I am not the best sprite artist - but hopefully you will enjoy her as much as I do.