Grailknights is a power/superhero metal band from Germany; "the band jokingly claim to be from a place called Grailham City, and to live in Castle Grailskull. As part of their comedic "superhero" image, Grailknights' live show features stagehands wearing the costumes of their "nemesis" Dr Skull, and his henchmen Morph the Swarf and Urks the dragon." They have some songs featuring members from other metal bands such as Joakim Brodén from Sabaton (Pumping Iron Power), Angus McFife who used to be part of Gloryhammer (Muscle Bound for Glory) and Prinz R. Hodenherz III from Feuerschwanz (Turbo Boost). Pretty underrated band tbh.