Sephimorph Share definition Flag A morphed form of Sephiroth (the antagonist from the PS1 game Final Fantasy 7) Did you see that jacked up lookin' dude cosplaying Sephiroth? Looked more like a Sephimorph! Sephimorph by Trei February 2, 2007 0 0 Get merch Get the Sephimorph mug. Buy Now — $32.95 See more merch