Killian appears to be in his late twenties or early thirties. He is a bit on the short side, measuring closer to five and half feet than six feet in height. He has a lithe and athletic figure, what many would call 'wiry'. He clearly has an active lifestyle or works out regularly but is not a weight-lifter. He has red, orange or reddish-brown hair, depending on the lighting he's in. He has the pale skin and distinctive features (like the hair) to denote Irish ancestry, though he doesn't sound like he was born in Ireland.
 He normally wears tailored suits and silk shirts, expensive clothing. His armored costume is a grand affair, a suit that covers him from head to toe, mostly white and yellow colors with a sunburst on the chest.


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