Gwen Tennyson (Classic)/Friends

Emily
Emily has been Gwen's best friend since kindergarten. They did everything together up until Gwen was halfway through Freshman year (start of Alien Force). Emily was able to understand Gwen's stressful life therefore being Gwen's personal hero when it comes to food. Because of her not being a hero like Gwen, she was unable to join Gwen in her Plumber activity. When Gwen had to join Ben and Kevin to fight Animo, Gwen was not willing to leave her friend, but she knew she had a responsibility.

Julie Yamamoto
Due to the relationship with Ben, Julie and Gwen have developed a very close friendship, doing girlish activities together like shopping or doing homework together. Usually when Ben and Julie have relationship problems, Gwen usually comes in Julie's defense knowing how obnoxious Ben can be. When Ben doesn't help Julie, Gwen usually is the one to help her. On one occasion, Julie was in danger because the Vreedle Brothers were given a task to take Ship for a prize in return. Ship merged with Julie to protect her, but it wasn't enough. Gwen risked her safety to save Julie and fight them off together.

Rook Blonko
Not much of a bond has been formed with her cousin's new teammate. It does appear that the two get along perfectly fine. At first she spoke about her college studies with him and even spoke about her personal problem with Kevin on how strange he was acting. They do work together, when Azmuth suggests that they help him with the helix. Gwen, however, felt somewhat offended when Rook says that she is only attractive by Earth standards. Rook knows when Gwen's birthday is. They talk a lot. Gwen even told Rook about Charmcaster, and both of them communicated with each other throughout the episode Charmed, I'm Sure. Rook was even worried for Gwen when he does not know about Kevin's whereabouts.

A key similarity between them is that they are both very intelligent. Rook is polite and formal towards her, even referring to her as "Miss Tennyson."