Felonious Gru is the main protagonist in the animated movie, Despicable Me.
Gru used to be the number-one greatest villain of all time (before being replaced by Vector Perkins, who manages to steal the Great Pyramid of Giza). In order to get his pride back, Gru plans to steal the moon by using a shrink ray he stole from a East Asian facility and impress his mother. He has an army of yellow Minions who assist him in his deeds, as well as a elderly partner named Dr. Nefario, who helps supplies weapons for him. Ever since Gru was young, he tried to impress his mother of his invetions, to no avail. It's because of this fact that led him to become a villain in the first place. He later adopts three girls and uses them to retrieve the shrink ray Vector stole from him, so he can use it to shrink the moon. However, when he goes to the carnival with the girls, he soon decided to change his ways and becomes a loving father to them. Just as he finally completed his goal in shrinking the moon, he decided to attend the girls' ballet recital, only to find out that Vector has kidnapped them and held them hostage in his lair, demanding for the moon in exchange for them, since Vector planned to claim the moon for himself, and remain the number-one villain that he is. Deciding that being with the girls is more important than his career as a villain, Gru instantly commits to the exchange, but Vector reneges on the deal, taking both the moon and the girls to himself in his ship. Infuriated by this, Gru arranges himself, Dr. Nefario, and the minion to launch a rescue for the girls, and at the same time, Dr. Nefario reveals that the effects of the shrink ray are temporary, meaning that the moon will revert back to its normal size, much to Gru's shock. Gru and his minions manage to save the girls while the moon starts to grow, causing Vector's ship to go into hyperjump, where it reverts back to its normal size on its orbit, destroying Vector's ship and leaving Vector stranded on its surface with a space helmet. Having defeated Vector for good, Gru gave up his villain ways and he, his mother, Dr. Nefario, and the Minions celebrate as the girls perform their recital for them. During the celebration, Gru's mother finally acknowledge her son of his success, declaring him to be a better parent than she is. He is voiced by Steve Carell.