Eli Strange was the son of Hugo Strange.
Eli would be born to a mother who would die when he was young and he would have no father. He would have remarkable skills in chemistry. He would at some time in his life believe Hugo Strange to be his father and would move to Gotham City. After a small deal with Catwoman, Eli would be allowed by Hugo himself as the mad doctor's heir. Eli would later try to transport Fear Toxin that he stole from the Scarecrow, however, he would talk to his father who would inform him to abandon the smuggling as the Batman was on his trail. Before Eli would be aprheended by the Batman, Hugo would tell Eli to thank himself for having connections.