|Unit type||Fourth Generation Knightmare Frame|
|Weight||5.97 Metric Tons|
The Portman is a Fourth Generation Knightmare Frame which serves as a naval knightmare frame in the Knightmare Battle! game.
The Portman is the first naval knightmare frame which is also capable of land operation. However, it is very limited both in the water and on land. It has an unusual appearance due to the need for different equipment for underwater combat. It also has scavenger type manipulator hands rather than regular knightmare hands, eliminating the usage of rifles and melee weaponry.