Mirqur floats, balanced with deft ease, walking at times but rarely bothering to touch the ground as he does. If he did, he'd be perhaps five and a half feet tall - a narrow, bronze-skinned creature, approximately human, but with pointed and rather feline ears poking out from his tousled black hair.
His face is partially hidden behind a small golden mask, giving him the muzzle of a stylized cat with glittering black eyes and whiskers. He's far from expressionless, however. The mask's features shift constantly with his mood, different aspects flickering and crossfading, occasionally becoming transparent enough to reveal the face beneath: slender, with high cheekbones and dark, mirthful eyes. Indeed, his entire form shimmers now and again as though seen through water, blurring slightly when seen out of the corner of one's eye.
Background
Bratty data cat, programmed as a message delivery system. Since a few revisions ago, he's been able to physicalize completely, and generally chooses to manifest as a sort of bike courier. He takes on other guises from time to time when on the job, usually encrypted and unrecognizable. Users call him up for everything ranging from glorified strip-o-gram service to infiltrating unfriendly factions.
His home directory is in a former bank computer in the Big Active building.