Superatom

Karay is the het ship between Ray Palmer and Kara Zor-El from the Arrowverse.

Trivia

 * Brandon Routh played Kara's cousin Clark in the 2004 film Superman Returns. The crossovers reference this twice:
 * During Invasion Ray makes a comment on how Kara looks like his cousin.
 * When Kara is about to have her heart cut out by Eobard Thawne, She states "My cousin, he'll find you." Later Ray comes and saves her.