Strange Hill High S02 E11 The MCDXX Men

"It's Weird. It's Cool. It's School!"

Mitchell, Becky and Templeton stumble across an underground lair that was home to a league of medieval superheroes - Ye Olde Righteousness League. When the League's evil arch nemesis escapes his confinement and possesses Abercrombie, our trio find themselves (and their classmates) transformed into these heroes to fight his tyranny.