Doctor Kasyanov was the Medical Officer aboard the deep space mining vessel DSMO Marion. She was serving on the ship above LV-178 in 2159 when the miners on the planet below stumbled upon a large number of Xenomorphs deep underground in the mines. The incident eventually led to the destruction of the Marion and the loss of all but one of its crew.

Kasyanov survived the expedition to the mine on LV-178, only to be killed when Ash caused a MedPod she was using to malfunction, slitting her throat with a surgical laser.

Personality and Traits

Kasyanov was a tough but compassionate member of the Marion, who refused to leave anyone behind, even Sneddon who was infected by the Xenomorphs.


For the expedition into the mine on LV-178, Kasyanov armed herself with a handheld plasma torch.


  • The exact manner in which Kasyanov dies differs between novel and audio drama adaptation; in the book, Ash simply has the med pod laser scalpel slit her throat, but in the audio drama she is instead vivisected by multiple lasers.



  1. Tim Lebbon. Alien: Out of the Shadows, p. 323 (2014), Titan Books.