A tall, wispy race of beings with a voracious appetite for artifacts of cultural knowledge (books, toys, puzzles). They have a long-standing cold war with the Lzhl that has led the Visitor/Entourage to approach each civilization simultaneously rather than their usual method of Visitation. Their diplomatic contact with the station is Georgeanna Vikram.
When the Mestromians consume a cultural artifact (a thing not seen by station people), they literally consume it and perform some sort of analysis of the physical/chemical makeup of the artifact. They value objects and people that have experienced a long life, a variety of cultures, or has some interesting arc to its life story.
They do also like solving puzzles, but then they eat them. (Mx. Hood is considered an… ill-advised choice of diplomat to send for a variety of reasons.)
GM notes: When generating names, use this set of generator settings.