in my personal opinion the narrative potential of marklin is entirely Weighed on the Enigmatic nature of the concept. an Engine without a face? in my medias??
such a Zany concept is fortified by the idea that the marklin Engine is inherently alien to the colorful Railway world.
Trying to make Marklin a character is like trying to make the boom mic a character. Marklin was a tool of the crew to capture the footage necessary for the production