Warning: This post contains spoilers from the season 3 finale of Supergirl. Read at your own risk!
After tonight’s finale, we know how Supergirl will handle Jeremy Jordan only recurring in season 4.
In the CW drama’s season 3 conclusion, Brainiac 5 (Jesse Rath) and Saturn Girl (Amy Jackson) return from the future to help the DEO fight Reign. After the initial battle, Brainiac 5 reveals that his evil, distant relative — a.k.a. Brainiac, one of Superman’s greatest enemies