Although the Kiseibya proved effective against the Daleks (although vulnerable to most weapons, the speed of the Kisaabya's gestation and reproduction, coupled with their ferocity in attack, helped to counter that weakness), the Seventh Doctor was unnerved by the similarities between Shimura and Davros's research. Both had created a new race to "save" theirs from a prolonged war. Both were unprepared for their creations' unwillingness to obey them. Shimura protested that his creations would stop the Daleks and save mankind, but the fact that the name "Kiseibya" means "parasitic saviour" in the Japanese language suggested to the Doctor that Shimura knew what he was doing was ethically conflicted from the beginning. As the Daleks invaded the facility, killing the Valkyrie unit, the Kiseibya