MOBA hero splash art in the style of Rick and Morty adult animated cartoon, tiny hamster pilot character inside a massive oversized battle mech suit powered by a nuclear reactor hamster wheel visible through a glass dome, mismatched scale creating comedic contrast, metallic silver and radioactive green color palette, glowing radiation particles and small sparks emanating from the reactor wheel, dynamic action pose with mech arms raised holding tiny weapons, dark cosmic battlefield background with explosion debris, bold cartoon linework with vibrant saturated colors, dynamic hero select screen composition, 16:9 aspect ratio, high detail illustration