Erin

Erin is a friend of Franny K. Stein who first appeared in The Invisible Fran, the third book in the Franny K. Stein book series.

Personality
Erin likes to dance.

History
On Hobby Day, Erin showed off her love of Irish dancing. Franny suggested that Erin could improve her skill by mutating herself with kangaroo DNA, an offer which did not amuse Erin.

When Franny got the idea to turn herself invisible to manipulate her classmates into becoming interested in working on her robot, Erin, Lawrence and Phil ended up persuaded by a invisible Franny to do some work on the robot.

Franny's plan ended up backfiring when the three decided to make modifications to the robot when Franny wasn't around to guide them, resulting in the two-headed robot becoming a destructive idiot who goes around destroying the school.

After Franny's own efforts in stopping the robot proved fruitless, she realized that her friends' hobbies had their uses and had Erin, Lawrence and Phil use their skills to take down the robot. Erin delivered the coup de grace by dancing on the robot until it became nothing but a bunch of flattened pieces.