Anyone know who drew this? It's one of my favorite Ultimate Grey Matter fanarts. I refound it on my phone and tried to reverse image search but that didn't work. : r/Ben10
Ultimate Grey Matter | Ben 10 Ultimate Wiki | Fandom
Ultimate Grey Matter by TheDoctorBatman1 on DeviantArt
Grey Matter - Ben 10 Characters - ShareTV
ArtStation - Ultimate Grey Matter
Muscular Grey Matter - Ben 10 Ultimate Alien Transparent PNG - 671x600 - Free Download on NicePNG
Ben 10 Grey Matter - Gray Matter Ben 10 Head Clipart - Full Size Clipart (#4041901) - PinClipart
Ben 10 Four Arms Grey matter Ben Tennyson, four arms heatblast, blue, grey png | PNGEgg
Greymatter - ben 10 alien force foto (9130553) - fanpop