The Flash adds Shadowhunters vet Jon Cor as Chilblaine

TVLine

He'll play scientist Mark Stevens, a "charismatic bad boy obsessed with cryogenic technology," per the official description. "But when he’s not breaking into corporate safes, he’s busy breaking hearts with his irresistible charm and roguish style. Armed with his own cold weapons, he’ll become a new thorn in the side of Team Flash as the DC Comics villain Chillblaine.”