Becky and Miranda Dalton

Season One

 * "High School Defenders" (first appearance)
 * "Face-Off"
 * "Being Human"
 * "Eye of the Beholder"

Season Two

 * "C is for Clone"
 * "H is for Hunted"
 * "L is for Lost"
 * "X is for Xanadu"

Season Three

 * "Worlds Apart"
 * "Parents Night"
 * "Double Trouble"
 * "Student Zero"

Season Eight

 * "Graduation"