Victor Aldertree from “Shadowhunter” is joining the CW show “Supergirl”

Supergirl season 5 has cast Shadowhunters star Nick Sagar as a new series villain. The actor, who played Victor Aldertree in Shadowhunters, is joining the CW show in the recurring role of Rip Roar, a “a multi-armed, technologically-enhanced villain” who…