The Guess Who game this week was REALLY challenging (everyone thank @BeannachtOraibh for getting those brain cells firing and contributing some great hints). One character was from Marvel and the other was from DC. Here were the hints again:
He was based on a real person from American history.
This character teamed up with a beloved masked vigilante for an 7-issue crossover.
She was abducted and brought to the U.S. at age 6
She can teleport through time and space