THE CASTING:
Timothy Olyphant as Captain Cold/Leonard Snart (from DC' Legends of Tomorrow & Flash)
Vin Diesel as Heatwave/Mick Rory (from DC's Legends of Tomorrow & Flash)
Josh Brolin as Ra's Al Ghul
(from Arrow)
Rachel Weisz as Talia (from Son of Batman)
Tony Todd as Deadman
Morena Baccarin as Catwoman/Selina Kyle (from Batman Year One)
Nonso Anonzie as Ubu
(from Son of Batman)
Colin Farrell as John Constantine (from the NBC TV Series & Arrow)
Kevin Durand as Swamp-Thing
Michael Jai White as Black Manta
Luke Evans as Orm/Ocean Master
Asa Butterfield as Klarion the witch boy
Blake Lively as Black Canary/Dinah Lance
Olivia Munn as Nyssa (from Arrow)
Orlando Bloom as Nightwing/Dick Grayson (from Son of Batman)
Alex Meraz as Red Hood/Arkham Knight/Jason Todd (from Batman: Under the Red Hood & Batman Arkham Knight)
Deborah Ann Woll as Batwoman/Kathy Kane (from Batman Bad Blood)
Ryan Potter as Robin/Damian Wayne (from Son of Batman & Batman Bad Blood)
Kodi Smit-McPhee as Robin/Tim Drake (from Young Justice)
Jennifer Garner as Talia (from Batman: The Animated Series)
MORTAL KOMBAT REBOOT:
Karl Yune as Liu Kang
Robin Shou as Kung Lao
Ian Anthony Dale as Scorpion/Hanzo Hasashi
Bryung-hun Lee as Sub-Zero/Bi-Han
Scott Adkins as Sub-Zero II
Elodie Yung as Kitana & Mileena
Morris Chestnut as Jax
Ken Watanabe as Rayden
Ryan Reynolds as Johnny Cage
Jason Statham as Kano
Arnold Vosloo as Shao Khan
Goro and other creatures in CGI + animatronics