Alexis Crimson is what some might call a "Nazi"--austere, rigid and ruthlessly efficient; a stickler for protocol who has sworn unyielding fealty to the Empire.  It might be said that she has the warmth of a Vulcan--except most Vulcans are warmer by comparison.  Crimson acts with complete detachment and lack of emotion.  Her appearance on a scene, in her custom black uniform, hair pinned tight, expression like steel, is a harbinger of dark things to come.  She doesn't drink or "sleep around" with the crew.

It is rumored that Crimson was trained by Cardassia's Obsidian Order; how or why she turned against the Alliance, if this is true, has yet to be revealed.  Crimson is aptly named--"crimson" is her color, whether it's her lipstick... or the color of her victims' blood, running cold beneath black-gloved hands.  She works on the ISS Arcadia as Security's Chief Interrogator.  She will use any tool necessary to accomplish a task (Romulan mind probes are among her favorites), and she always gets results.  She helped to design the neuralizer.