The Laiderplacker were a race of bat-like aliens that wished to invade the Earth in 1938. They had weapons that worked on shooting radiation into the intended victim. One set landed in September 1938, which was a breeding party, and another a month later to find out what happened to them. They planned to swindle the world with what was essentially a protection racket, but the Eighth Doctor managed to convince them that there was another invasion happening at the same time by using Orson Welles' broadcast of The War of the Worlds. However, he inadvertently also broadcast their discussion following this, revealing his falsehood, but they were ultimately destroyed when Yuri Stepashin detonated his atomic bomb. (AUDIO: Invaders from Mars)

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