Dakota

Dakota Briely is a superhero and a main character in Lab Rats: Elite Force. She joined forces with Bree and Chase (along with Oliver,Kaz,and Skylar) to track down unknown super villains, and protect the world.

Backstory
Dakota is an original team member of the Lab Rats team. She is even Chases girlfriend. While not related to the davenports, she is included as part of the family.