Manslaughter claimed he grew up in poverty and on the streets, although he could have been lying. His real origin is unknown. It is known that Manslaughter used his then-latent powers to track the Interloper in the deserts of Siberia. Impressed by the feat, the Interloper taught Manslaughter to develop his psychic abilities. However, he noticed that the Manslaughter was mentally unstable, so he did not teach him too much in order to prevent the creation of a threat. Manslaughter had learned enough and began a career as a paid killer, motivated more because of the sport and fun than for reward. The Interloper tried to stop him, but found himself unable to.
Fighting the Defenders

Manslaughter was hired by a crime boss whose recent cocaine smuggling operation had been frustrated by the Defenders, a group of costumed superheroes. The crime boss wanted Manslaughter to defeat and kill the Defenders. However, the Defenders defeated Manslaughter and sent him to prison.

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