Pocket Dimension Creation – The ability to create a pocket dimension. Similar to (128) Dimensional Storage but obviously creating a pocket dimension is a bigger power than storing objects in another dimension.
Franklin Richards (Marvel) created a pocket dimension to escape from Onslaught (Fantastic Four V1 #574).
The Howling Abomination has its own personal pocket dimension known as a death warp (Creature Collection II. Dark Menagerie).