Grace Cardinal

Season One

 * "The Begins: Part 1" (first appearance)
 * "The Begins: Part 2"
 * "Back to the Future"
 * "Divide and Conquer"
 * "Return of the Freddy Kreuger"
 * "Homecoming Upset"
 * "Public Enemies"
 * "Bring it On"
 * "Game On"
 * "Return to High School"
 * "Face-Off"
 * "Action Heroes"
 * "Framed"
 * "Remote Control"
 * "24"
 * "Breakout"
 * "The Secrets of Vision"
 * "Royal Pain"
 * "Being Human"
 * "Eye of the Beholder"
 * "Step by Step"
 * "A New Hero Next Door"
 * "The Hunted"

Season Two

 * "A is for Army"
 * "B is for Battle"
 * "E is for Enemy"
 * "G is for Guardian"
 * "K is for Knowledge"
 * "L is for Lost"
 * "O is for Overlord"
 * "S is for Self"
 * "V is for Victory"
 * "X is for Xanadu"
 * "Z is for Zero"

Season Three

 * "Secret Weapon"
 * "Heroes VS Villains"
 * "Worlds Apart"
 * "Parents Night"
 * "Dante's Return"
 * "The Lord of Maleficent"
 * "Legend of Nico"
 * "Dream Warriors"
 * "The Marble Other Name"
 * "Double Trouble"
 * "Legendary Heroes"
 * "Exchange"
 * "Mind Control"
 * "Student Zero"
 * "Elementary"
 * "Legions of Thanos"

Season Eight

 * "Graduation"