Darkwing Duck (1991)
S02E11 Going Nowhere Fast
Episode Overview
Negaduck uses a particle accelerator to zap Darkwing, inadvertently granting him super speed. However, Darkwing quickly discovers a troubling side effect: he begins to age rapidly. As he becomes frail and feeble, Negaduck seizes the opportunity to take over the city without resistance from the once-mighty hero.