Iris is visited by what she initially thinks is the real Ryan Wilder, but she eventually realizes the visitor is an imposter. Episode 5: "Mask of the Red Death, Part 2"
Chillblaine (Mark Blaine) acts as a double agent. He ultimately sacrifices himself—or so it appears—to short out the treadmill and allow Barry to escape, though he is left behind with Red Death. The Flash 2014 S09E05 Mask of the Red Death Par...
The villainous Red Death is revealed as a doppelgänger of Ryan Wilder (Batwoman) from another timeline where she became a villainous speedster after growing delusional about crime and her world's Flash. Iris is visited by what she initially thinks