Jeremiah Danvers

Jeremiah Danvers was a scientist and the father of Alex Danvers and the foster father of Kara Danvers.

Biography
He and his wife helped Superman understand his own abilities at one point in time.

Taking in Kara
When Superman discovered his cousin Kara Zor-El, he and his wife took her into their home.

Death
While on a mission to locate J’onn J’onzz in a remote location in Peru, he realized J'onn wasn't a threat but a refugee. Jeremiah tried to stop the mission but Hank became obsessed and refused to. When Hank finally trapped J'onn, Jeremiah sacrificed his life to stop Hank. As he died, J'onn made a promise to take care of Jeremiah's daughter.