Horrorkons were feared creatures native to the swamps of Gurnian. They had two long-necked heads with a pair of sharp teeth each, two tentacles, six legs, and a tail. Originally believed to be vicious and unruly, the creatures were kept in check by patrolling Marsh Daleks.
- You may be looking for Terrorkon.
It was later discovered by two humans who had eluded Dalek capture that the Horrorkons were surprisingly docile, having a savage appetite only for metal. (COMIC: Monsters of Gurnian)
The Seventh Doctor battled against either a Horrokon or a Terrorkon in London's sewers. (GAME: Dalek Attack)