Mars is a test subject from the Level 1 habitat. They fist showed up in the May 1st, 2016 update, specifically on page 870. Their first speaking role is on page 970. Their dialogue text is a light mint-ish color.
Mars has dark skin with freckles on their cheeks. They have curly black hair that is tied back in two braids, with a fluffed-up portion on their head resembling bangs. They wear the standard level one outfit.
They seem to be quiet and sweet.
They are friends with Twigs and Squid.