Ophelia

Overview
Whether or not robots should be considered monsters has led to somewhat of a sociopolitical divide on the island. On one hand, they're not biological, but on the other, they could very easily harbor up the force to crush your skull with their pinky finger if they happened to short circuit.

You met her in the first scene of the game, she is laying over you and apologize for the landing, then after that starts fighting with Nidhogg

Is stated in his Database that she is the last of the 'obsidian guardians' presumably a series of robots created to defend humanity against the monsters by studying and adapting to fight them.

The orange lines in her body helps her to absorb the energy of the sun, she also wears a bunch of silicone straps attached to her body, and the cables that falls from her head seems to be one of his weapons.