August Heart, better known by his alias Godspeed, is the main antagonist of DC Comics's The Flash: Rebirth series, beginning in 2016.
Godspeed is a colleague and old friend of Barry Allen (aka The Flash) who took on the serial killer persona Godspeed after obtaining Speed Force Powers after being struck by lightning. He began fatally draining the ability of other speedsters in order to make himself stronger, and using this speed to make himself judge, jury and executioner of other criminals in Central City, aiming to avenge his brother's murder by any means necessary.