In Batman vs Superman, Lex Luthor cuts his hand and drops some of his blood on

Zod to create Doomsday in the spaceship.

Why was his blood necessary/desired for

the creation of Doomsday? Its not like Lex has any super powers that Doomsday could use. He is highly intelligent, but I am fairly certain that Doomsday didn't benefit from that.

What did the blood do?


1 Answer 1


The movie did not explain that very well, but we can infer what was intended based on the ship's computer's dialogue.

Basically, Doomsday was an "abomination" that was a hybrid of Kryptonian and non-Kryptonian blood. For reasons that are never fully explained, Zod's ship

  1. Knew how to create such an abomination,
  2. Knew how to use human blood to do it,
  3. Had the equipment needed to pull it off,
  4. Knew it was forbidden by Kryptonian law (implying that it had been done in the past), and
  5. Did it anyway.

It doesn't seem like Luthor's blood specifically needed to be used; the implication was that any "foreign" genetic material would have created some kind of similar monster. Luthor, for his part, seemed to expect that using his blood would bind the creature to him and force it to do his bidding. It's not clear from the movie if that actually happened or not, because as soon as Doomsday appears on screen, Luthor basically vanishes until the final scene.

  • 1
    I think I remember something from the first movie about those scout ships having genetic records and being able to produce life on target worlds, so it's not surprising that it would have all those facilities. Zod's goal in the first one was to use the DNA encoded in Kal-El's to populate the Earth with cloned Kryptonians, so that's clearly something that they do.
    – DCShannon
    Commented Mar 30, 2016 at 16:44
  • 2
    The ability to create life wasn't surprising, based on the fact that Krpyotonians (I believe) were all genetically engineered; the fact that the ship had the facilities to create something illegal, knowing it was illegal, and let Luthor do it anyway... that was odd. I have to wonder if there was a scene edited out that explained all that.
    – KutuluMike
    Commented Mar 31, 2016 at 19:55
  • I thought that was pretty clearly explained when Luthor asked where the council was now, and the computer responded that they were destroyed. There's no legal body to enforce the law, so it's no longer relevant.
    – DCShannon
    Commented Mar 31, 2016 at 19:57
  • 1
    Poor Lois there if every non kryptonian hybrid is a monster.
    – Thomas
    Commented Apr 23, 2016 at 13:30
  • 1
    KutuluMike:: The ship itself was not being held to any specific laws it was merely presenting a statement of fact to Luthor referring to his current act being illegal, allowing him to now become aware of that fact and now, did he in fact wish to continue forward in the face of that knowledge. I mean.. it's all basically implied but I don't believe it to be too far of an implication.. do you?
    – DCDuckyG73
    Commented Jul 13, 2020 at 13:59

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.