Agent Kleinboard (Sky High: 8th Grade Superheroes)

Episode Appearances

Season One Episodes

• "It Begins and Returns" (first appearance)
• "Hero VS Villains"
• "Freeze Girl"
• "Elementary"
• "A Man Called Medulla"
• "Secret Agent Zero"
• "King Dedede VS Royal Pain"
• "Return of the Bowser Jr."
• "The Ring of the Master"
• "Planet 51"

Season Two Episodes

• "Secrets of the Lost City"
• "Breakout"
• "Secret Saturday"
• "The Forces of Evil"
• "Take This City"

Season Three Episodes

• "Gotham"
• "Commander Attack"
• "King of Castle"
• "A Talented Mr. Stronghold"

Season Four Episodes

• "Fallen Hero"
• "The Doubtful Prince"

Season Five Episodes

• "Pain Kings"

Season Twenty Episodes 

• "The High School Planet" (final appearance)