The Flash is an American action television series developed by Greg Berlanti, Andrew Kreisberg, and Geoff Johns, airing on The CW. It is based on the DC Comics character Barry Allen / Flash, a costumed crimefighter with the power to move at superhuman speeds. It is a spin-off from Arrow, existing in the same fictional universe. The series follows Barry Allen, portrayed by Grant Gustin, a crime scene forensic investigator who gains superhuman speed, which he uses to fight criminals, including others who have also gained superhuman abilities.
Savitar is a fictional supervillain published by DC Comics. An immensely powerful speedster that leads a cult dedicated to the Speed Force, he has battled Wally West, Jay Garrick, and Barry Allen.
The character appeared on The CW’s live-action television series The Flash during the third season, voiced by Tobin Bell and portrayed by Grant Gustin.