First Mentioned In:
Love & Monsters
The Stolen Earth
Clom, also spelt Klom or Cloume, (The Girl Who Waited) was the twin planet (or sister planet) of Raxacoricofallapatorius. Together, they were members of the Raxas Alliance.
As a member world of the Raxas Alliance, the treasures of Clom were held in the Raxasian vaults. (Doctormania)
Clom was inhabited by an intelligent species. (Love & Monsters) At some point, they had a Disneyland on Clom, which was replicated by the Apalapucians. (The Girl Who Waited) they were members of the Raxas Alliance, along with Raxacoricofallapatorius, Clix and Raxacoricovarlonpatorius. (The Gift) Despite this, there was an adversial relationship between Clom and Raxacoricofallapatorius. (Love & Monsters) Clom was used in an oath by a Slitheen as “for the love of Clom”. (Revenge of the Slitheen) Similarily, the Tenth Doctor was once heard to curse “for the mists of Clom.” (The Krillitane Storm)