DC Database

Lex Luthor was the young son of Luthorcorp founder Lionel Luthor. Lionel was paranoid that Lex was plotting to kill him in his sleep.

While being given a tour of a military base that housed alien projects that Lionel had funded, one of them, an alien dog, was mind-controlled by Subject Zero into breaking out of its cage and attacking. Lionel, with no hesitation, sacrificed his son by throwing him at the dog to be eaten, the dog later being killed by the security.