Medwin is one of four captured dwarves in the Penguin Outpost on the Iceberg. All four of the dwarves feature in the quest Hunt for Red Raktuber, and they are seen building a submersible for the penguins.
Medwin may be one of the dwarves who teaches the player how to disable the submarine Red Raktuber, and provides the player with the toolbox used to disable it. Upon completion of the quest, players learn that the dwarves are part of the faction in the Red Axe which is in league with the KGP to take over the world.
Medwin might be based on Albert H Medwin, an American electrical engineer. Albert Medwin was involved in the early development of integrated circuits, and holds several patents including one titled "Semiconductor Translating Circuit" and another called "Integrated Circuit".