Zangief finds himslef roaming around the Injustice DCU, when he gets confronted by the Regime's henchmen which he prompty man handles. He sees that one of them took a pill that mad him stronger, so upon taking that soldier down, he gets the pill and takes it. As if on cue, Grundy shows up and a fight ensues.
Win by KO
If you don't know, the "super pill" magnifies strength and durability by several thousand percent.