Martin has pale skin with grey-green hair and stern-looking amber eyes. His eyebrows are thin, and his face is typically set in a neutral expression. He wears a sleeveless light gray turtleneck under a darker gray vest with straps and leather shoulders. He has white arm sleeves that reach his biceps and also has white fabric gloves. On his left arm he wears metal armor that extends a little past the arm sleeve, shielding the outer side of the limb. His pants are a similar grey to his vest.