Student: Nightfall [Team Kraken]

Name: Catarina "Cat" Altagracia Montoya
Codename: Nightfall
Age: 17
Appearance: 5' tall, with medium-brown skin, dark brown eyes, and black hair, with a gymnast's tight musculature; wears a black jeans jacket adorned with various patches that she's sewn in place herself.
Notable Skills: first aid, dance, gymnastics, driving, bluffing, reading reactions, speaks Spanish
Quirks: slow to make friends/keeps to herself, constantly polishing her glasses, likes animals better than people, nervous and has trouble relaxing, loves sushi

Cat is a relatively new addition to the school, as well as to Team Kraken. She's a solid student; what she lacks in insight, she makes up in persistence. She prefers not to interact with people she doesn't trust -- which is basically everybody -- and can come across as aloof or even hostile. (She is also quite capable of being actively hostile if she feels the situation warrants it.) She gets along better with the instructors and the younger students than she does with anybody close to her own age. 

Despite this, she has been recruited to the recently-formed Team Kraken -- in part for her power, and in part because of her absolute willingness to fight. She is working on developing more control, both of her power and of herself; she's been reprimanded for overdoing things during training once already, and doesn't want a second reprimand on her record. Cat's most obvious ability is the power to summon darkness, suppressing all visible light in an area of her choosing, but she can also shut off most electromagnetic radiation (notably including radio waves). When she extends a field of darkness around her, she can feel everything that happens inside it, so despite her lack of physical enhancements she generally has little trouble dodging enemies unless they can see in the dark. 

She once used her darkness to escape a particularly nasty situation, actually traveling through the darkness to take herself outside of a building where she was being held. She would love to be able to move around that way at will.