Thread:MysteryScooby/@comment-4300738-20170607032834/@comment-4651179-20170607105047

Both monsters have different facial features so I doubt it (most notably, the S.M.A.S.H. monster has a fin, no nose and no chin). Most characteristics they share are common of dragon-like monsters (I always felt out of all of Kei Kawade's monsters, Slizzik was the most generic-looking).