- Story: Circa
- Age: 23
- Alignment: Chaotic neutral
- Gender: Cisgender female
- Orientation: Ace
- Appearance: Dark haired in a bowl cut, round glasses, very tall, thin torso, larger at the hips and thick-legged. Enjoys being barefoot.
Caleb is a clever and studious girl, she loves to absorb information and never seems to forget anything. She is Nemerald's second hand and helps him run the clinic. She taught herself how to program, and speaks many languages.
She is Nemo's mentee and is learning to care for humans, she hopes to someday get into bio-hacking.
Cal spends most of her time in the clinic, having little interest in those her age. Like Nemo, she is smart beyond her years.