The Killer Croc Xenomorph was a hybrid that appeared only in Batman/Aliens Vol. 2. Its creation was the result of biomatter taken from Killer Croc.

Unlike the other hybrids created by Dr. Fortune to whom she had added her DNA that were loyal and controlled by her, the Killer Croc hybrid hadn't had her DNA added to it and was uncontrollable, murdering its 'creator' with a Headbite upon encountering her.

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