Wally West is the original Kid Flash and third man to don the mantle of The Flash.
The former Kid Flash, when Barry Allen sacrificed his life to save the multiverse Wally West followed his mentor's footsteps and became the new Flash, joining the other members of the new Justice League.
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 Wally West, ready to assist him in fighting a new, terrible crisis.
Powers and abilities
The Flash possesses the same powers as his predecessor, with the Speedforce connection giving him an incredible speed he uses for phasing, time travelling, vortex generation, electricity manipulation and much more.