In a rather interesting casting choice, The Flash and Gotham have one again picked the same person. Earlier in the season both shows cast Anthony Carrigan – The Flash had him as The Mist / Kyle Nimbus while on Gotham he played Victor Zsasz. And we got word a while back the Firefly and V alum Morena Baccarin was joining Gotham as Dr. Leslie Thompkins. But if you watched this most recent episode of The Flash you might have recognized Baccarin's voice as that of Harrison Well's computer AI Gideon.
But Baccarin has been playing in the DC Comics pool for a while now having voiced Black Canary on the Justice League series, Talia al Ghul in Son Of Batman and Cheetah for Batman: The Brave And The Bold. She's also very busy right now, besides the two DC roles she is also reprising her roled of Erica Flynn on The Mentalist (a series created by Gotham Executive Producer Bruno Heller) and appearing in the new miniseries The Red Tent.