Samus Aran is slender and light-skinned with a voluptuous physique under the armor, though her superhuman abilities may be accountable to her muscle/bone density given her hybrid genetics and augmentations. Her hair color is blonde, her eye color is blue with a green tinge, and she appears to be Caucasian.

Samus typically wears her blond hair in a modified ponytail with a red hairband, with a lock on either side. The exact hairstyle, however, can vary from game to game.