J'onn reveals the tragic history of his home planet. A thousand years ago, Mars was a peaceful civilization until these parasitic invaders arrived, feeding on Martian psychic energy and eventually wiping out the entire race. J'onn, the sole survivor, had kept them in stasis for centuries until Earth astronauts accidentally released them. The Invasion Intensifies
In the second part of the Justice League premiere episode, "," the world’s greatest heroes finally unite to combat a global alien invasion. The Heroes Assemble Episode 2: Secret Origins (2)
: Arrives just in time to catch Batman’s falling plane with his power ring. J'onn reveals the tragic history of his home planet
The episode ends on a grim cliffhanger: while Wonder Woman escapes with an injured J'onn, inside the exploding facility and is believed by his teammates to have perished. The Invasion Intensifies In the second part of
infiltrate a central plant to steal its ion matrix crystal.
successfully destroy one factory, though Flash briefly gets stuck in alien goo.
Watch a quick summary of the heroes' first major battle against the alien invaders in this recap video: Justice League Secret Origins Recap in 90 Seconds! Andy Knode YouTube• Aug 15, 2023 Justice League (TV Series) Episode: Secret Origins, Part II