Kid Flash is a speedster superhero.
The son of Daniel West, the Reverse-Flash, Wally was a juvenile delinquent who inherited his father's connection to the Speed Force. Admiring Central City's hero The Flash, Wally decided to use his powers for good and became the new Kid Flash, with his hero becoming his mentor.
Role in Injustice
In The Flash's ending, when Barry runs to the end of history through the Speed Force he's reached by other Speedsters, including Kid Flash, ready to assist him in fighting a new, terrible crisis.
Powers and abilities
Kid Flash is connected to the Speed Force, that grants him an impossible speed and several other related abilities, such as accelerated healing, phasing, lightning bolt generation, vortex creation and much more.