Brainiac - Red Hood's Arcade Ending - Injustice 2

 Shot and killed by Red Hood. 

Red Hood - Red Hood's Arcade Ending - Injustice 2

After killing Brainiac, Red Hood turned his attention to protecting Gotham, believing that Batman and Superman were too busy fighting amongst themselves to help those in need. 

He had no qualms killing criminals. 

Professor Pyg - Red Hood's Arcade Ending - Injustice 2

Killed by the vigilante Red Hood after he kidnapped a young girl and partially converted her into one of his Dollotrons. 

Sasha - Red Hood's Arcade Ending - Injustice 2

A young girl rescued by Red Hood after she was kidnapped by Professor Pyg and partially converted into one of his Dollotrons. 

Darkseid - Darkseid's Arcade Ending - Injustice 2

After his last invasion ended in disaster and his son was killed by Superman, Darkseid vowed revenge. He spent the following years rebuilding his forces.

When he learned that Brainiac intended to capture Superman for his collection, Darkseid traveled to Earth to eliminate the Coluan. With Brainiac gone, he launched a full-scale invasion, wiped out the planet’s heroes, and kidnapped both Kal-El and his cousin Kara.

Avenging Kalibak, Darkseid killed Superman and used his blood to create a new breed of Parademon, led by his newest Fury—Supergirl.

Wonder Woman - Darkseid's Arcade Ending - Injustice 2

Impaled with her own sword during Darkseid's most recent invasion of Earth. 

Brainiac - Darkseid's Arcade Ending - Injustice 2

Destroyed by Darkseid's Omega Beams after threatening to kidnap and collect Superman. 

Silas Stone - Injustice 2

The father of Victor Stone, aka Cyborg. 

Streaky - Injustice 2

The pet cat of Kara Zor-El. 

Jennifer Brady - And Then There Were None

An elderly woman, Jennifer Brady was smothered to death by her butler, Thomas Rogers, after she bequeathed to both him and his wife, Ethel, a small inheritance in her will. 

Her death was ruled an accident. 

Years later, Brady was posthumously avenged when Lawrence Wargrave, under the alias U.N. Owen, lured the Rogers to Soldier Island, where Thomas was tormented and killed by the former judge.