Ariadne is a pilot in Into the Breach.
Location
After breaking a certain tile of ice in the snowy island, a "mysterious object" wiil be found under it, if you take it a special time pod will fall from the sky, Ariadne will be inside.
Background
Rock (people, male and females of the species exist) are large, herbivorous bipeds. Rock(men) are natural isolationists and like to be left alone. They are dogmatic and single-minded. In their own territories, they are largely religious zealots and have a wide interpretation of cultural transgression (ex: offers to trade can be interpreted as hostile). Rock(men) are raised so that radical members of their species are separated from the population and carefully managed so that they can fit in with the rest of their culture. Interaction with alien species is illegal. Their home culture involve arranged marriages. They were one of the founders of the Federation (along with humans and Engi).
Rockmen who do not conform to their species stereotype (say, rebelling against religion or by being simply... different) can be found amongst the stars, and several instances of Rock pirates and warriors exist in the Big Black (they are known to cover their ships with "outcast decorations"). Ariadne (female of the species) was fleeing a pre-arranged marriage to a Basilisk Chief (see FTL) when the beacon diverted her vessel. Her crime prevents her from wanting to return to Rock space even if she could... but is uncomfortable amongst the many cultures on the new planet she has found. She is vaguely curious what time travel/breach technology could possibly do to erase her crime and the events leading up to it, allowing for a fresh start.
Personality
Rock people "speech" is like a low grumble - slower, almost a 'rocks grinding' sound.