The Fairly OddParents (2001)

S8E17 When Losers Attack

Timmy Turner’s foes join forces to create the League of Super Evil Revenge Seekers (L.O.S.E.R.S.) with the goal of destroying him. However, during the Fairy-clipse, a once-in-a-million-years celestial phenomenon, Cosmo and Wanda find their magic powerless to help him. Left to fend for himself, Timmy must rely on his own cleverness to outsmart the L.O.S.E.R.S. and escape their wicked plans.