Spiridus is described as very straightforward and borderline emotionless. In reality, she is just genuinely unbothered and tries to keep her speech as concise as possible. She's got a questionable moral compass and is not above stealing/sabotage, when motivated either by her or her colony's interests.

Spiridus was brought to Spear as a whelp while the colony was still developing; she grew up practically alongside the colony. She is studying to be a surgeon.