YMMV / The Plumber Knight Returns

• Complete Monster: The Koopa is a far darker and more terrifying incarnation of the Darkness from the previous series. The leader of the terrorists known as the Goombas, the Koopa took over and ruled Ferral City with his forces, punishing anyone who disobeys him, including his own men. The Koopa claimed to be the killer of Luigi just to goad Mario out of retirement so he could defeat him once and for all and then sends Jeckal to kidnap Mario's friend and ally John Gibbs and tortured him to near-death, leading to him dying from his injuries later. The Koopa later lured Mario into the woods just to have a fight with him and reveal his identity and lay the rest of his plan into motion. In Season 2, he revealed that the mysterious Blue Hood was a cybernetically enhanced and brainwashed Luigi, so Mario would be reluctant to kill him. Then, after Luigi came to his senses, the Darkness murders him just to spite Mario further. The Darkness later revealed he intends to drown the world in chaos and madness by manipulating humanity from the shadows and making them give into negative desires and emotions. A sadistic and inhuman psychopath who sees happiness and joy as facades, this version of the Darkness is a chaos-worshipping lunatic driven by his jealousy of life itself.