The Fairly OddParents (2001)

S10E29 Fairy Con

Title: Fairy Fest Plot: Mr. Crocker concocts a plan to create duplicates of Cosmo and Wanda so he can infiltrate a fairy festival. His goal is to steal the magical powers of the fairies in attendance, hoping to gain ultimate control over magic itself. As the convention unfolds, chaos ensues when the clones begin to act unpredictably, putting Mr. Crocker's scheme at risk. Meanwhile, Timmy must find a way to save his fairy friends and thwart Crocker's nefarious plans before it's too late.