karen has really changed since she was a child. She dyed her hair black with a hint of purple and she's managed to make some new friends in the goth kid Firkle, Craig's little sister Tricia, and her best friend ike broflovski. She's an outgoing person who loves to hang out with her friends. While he's in the hallway she runs up to him and jumps on his back while hugging him.

Karen: hey ikeey! How ya doing Bestie? her smile grows while she's hugging him