Obverse

The Obverse was the pocket universe from which Iris Wildthyme came.

Geography
The Obverse was connected to the Doctor's universe by the Enclave. Another entrance to the Obverse was located through a Ringpull on Hyspero. The Clockworks resided in the Obverse, from their powerbase in Saga City. (PROSE: Wildthyme Beyond!)

History
One implied that the Obverse was a construction of the Celestis' making. (PROSE: The Taking of Planet 5)

Valceans originated from the Obverse. (PROSE: Verdigris)

Iris Wildthyme once encountered the Eighth Doctor in the Obverse. (PROSE: The Blue Angel)