Anita Dakin is the character I'd like you to meet... :)
She's a 20 years old FBI agent, the newest and youngest member of the BAU team. Even though she is young, she managed to become Junior Field Agent, mostly thanks to her high math abilities. She likes math and physics, but lacks characteristics such as determination or bravery. She is very emotional and sometimes feels insecure or scared by the things that other agents consider normal parts of their job. However, she has high moral standards and is great at logical thinking, solving puzzles and cracking codes. That is why her team values her, and they believe that she will one day outgrow her disadvantages and become a good agent. For now, they kind of treat her like a child.
Due to her brilliant mind, she finds a close friend in Spencer Reid. He is kind of role model for her, and he often comforts her that it is okay to be "scared of your own mind". Unlike Reid, Anita is not interested in other sciences, and doesn't read as much as him.
She fits in well and gets along with her teammates.
Anita has kind of a crush on Hotch, but doesn't want it to be obvious because of the age difference. He is also very protective over her and cares for her a lot.
Anita likes her job and is motivated and ready to learn.