Felonious Gru (simply known as Gru) is the main protagonist of Despicable Me franchise and a minor character in it's prequel Minions.
Gru is a 50-year-old bald man who used to be the world's #1 villain. His plan involved stealing the moon, which would be the crime of the century. When he saw Margo and her little sisters go inside Vector's lair, Gru decided to adopt them so they could sneak into Vector's lair and take the shrink ray Vector stole from Gru who stole it from an Asian laboratory. At first, he just wanted to send them back to the orphanage as soon as he got the shrink ray, but he began to like them after spending an afternoon with them at an amusement park.
He is voiced by Steve Carell as both adult and child who also voiced his twin brother Dru, Hammy and Mayor Ned McDodd.