|“||Dru: "Face it, Gru! Villainy is in your blood!"
Dru: "Just one heist?" Gru: "Mmm..." Gru: "How about, we steal, the Biggest Diamond in the World?" Dru: "Yes, brother! Thank you from the bottom of my heart!"
— Dru & Gru having a conversation
47 (Despicable Me 3)
Robert Gru (deceased)
Felonius Gru (Twin Brother)
Dru Gru is the twin brother of Felonius Gru and son of Robert and Marlena Gru, Lucy Wilde's brother-in-law, and the adoptive paternal uncle of Margo, Edith, and Agnes. He is an aspiring villain who wishes to learn from his retired brother Felonius Gru.
Similar to his identical twin brother, Dru has a unique appearance with a long pointed nose just like his mother, Marlena. But unlike Gru, who is bald, he has a full head of blond shaggy hair, inherited from his father, and wears a white suit, scarf and shoes, as opposed to Gru. His eyes are blue, and he is left-handed.
When Dru and Gru were born, their parents divorced and took one child each. Dru's father, Robert, became his guardian, and they both moved to Freedonia and Dru grew up there. Robert was a legendary supervillain and started the hog-raising business as his front. He wasn't satisfied about Dru, who lacks the qualities of a villain like himself.
Dru later inherited Robert's mansion after his death.
Despicable Me 3
Dru dispatches his butler Fritz to invite his brother Felonius Gru, who confirms with his mother Marlena of Dru's existence. As such, Gru with his family visit Freedonia and Dru welcomes him warmly, but Gru begins to feel jealous. Dru also welcomes warmly to Lucy Wilde, Margo, Edith and Agnes, who proclaims themselves as his genuine nieces.
After his nieces and Lucy go to the town with Fritz to give the twins time to bond, Dru shows Gru their late father's lair and persuades Gru to pick up villainy again. While Gru tells Dru that he had given up being a villain and isn't planning to go back, Dru shows his twin their father's car (Dru's Villain Wheels) and suggests that they drive out in it. As Dru takes the wheel, he shows Gru the car's weapons and many functions, even when panicking as his driving got them off the road and off the edge of a cliff. After Dru stole candy from one of the van stands at the Freedonia Cheese Festival and got the attention of the local police from the van's alarm, Gru took the wheel and got them to safety; as well as showing Dru that he hadn't lost his villain touch.
Once at safe distance, they parked the car on a small beach so they could dry their clothes. Dru asks Gru to do a heist with him together. Gru wasn't sure at first, but he finally agreed to his brother's proposal so they could steal the Dumont Diamond from Balthazar Bratt; and get his and Lucy's job back. When the two got back to the mansion, they switch clothes to play a trick on the girls, but Lucy and the girls could see right through it.
The next day, as Gru was explaining the layout of Bratt's Lair and the plan to get in and grab the diamond, Dru acted like he was watching a film as he sat back and ate popcorn. He became upset as he learned his part in the plan was to be the get away driver, when he wanted to be at Gru's side when they get their hands on the diamond and become the richest villains in the world. When the two get to Bratt's lair, Dru "changed the plan" and accompanied Gru as they made their way in. Gru had to help Dru through the building's security system and getting in without notice, while he started to think that he should have stayed in the boat. However, Gru cheered him up by telling him that he's there to support him. They continued to travel the base until Dru got distracted with the Evil Bratt toys (as he once owned one) and the gum; which got them caught when he took one and put it in his mouth without knowing its ability - the gum soon became extremely large and started to come out from Dru's nose and mouth. Gru used the gum that was deflating inside Dru to spit it out and trap Bratt to the wall. Lucy had spotted the twins when they were leaving for the heist earlier and came to their rescue in Dru's red helicopter.
Dru learned Gru's true reasons for their mission and he felt betrayed; when they got back to their father's lair, the twins fought, and Gru told his brother that he has no skill and is far too clumsy to be a real villain and leaves. After Gru found Lucy tied up, it turned out Bratt had stole the diamond back and kidnapped the girls, he and Lucy rush to Dru's room where he is eating ice cream to drown away his sorrow. But upon learning that his nieces have been snatched by Bratt, Dru immediately drops his anger and he, Gru, and Lucy board his hovercraft and fly to Hollywood to rescue the girls.
Once there, Dru recognized the layout of Bratt's plan from one of the Evil Bratt episodes he watched in his youth and knew that he was reenacting it. While Lucy went to save the girls, the twins made their way to the giant Bratt robot. Dru found his way into it and managed to disconnect it, acting quickly before its laser could reach Gru. When the giant robot came down, Gru feared that Dru was still inside and had died, but was attacked by Bratt. After Gru finally defeated Bratt and sent him straight to the AVL, he searched the wreckage for Dru, who approached his twin and revealed himself to be safe and unharmed. The reunited family takes part in a group hug. The Minions fall right-out of the sky and return to work for Gru again.
Dru later went to live with Gru and his family in their house and had a pillow fight with him and the Minions on the night, before Gru and Lucy got back to their jobs. Once he and the Minions were tucked in bed and Gru and Lucy went to do the same.
However, Dru was still determined to continue the family tradition and has convinced the Minions to join him in his career as a supervillain. Together, they stole Gru's Airship and replaced Gru's emblem with a D. Gru and Lucy catch them in the act as Dru goes to "continue the family tradition" with all the Minions, and his brother decides to give him a 5 minute headstart.
Unlike Gru, Dru is shown to be a lot more happier and a bit hipper, hyper and full of energy when excited, he is also shown to be a bit clumsy and careless; which is why his father refused to teach him how to be a villain and had to turn to his brother for lessons. He is also shown to panic and overact when he is scared, as well as being disobedient, childish and sensitive. He is also extremely funny, friendly, and witty.
While he yearn to carry on the legacy left by his father, Dru has a good heart as he was quick to assist Gru in rescuing his daughter, protecting his brother from being killed by the laser beam of Balthazar Bratt, and sharing a family moment with his whole family.
Despite moving in with his brother, Dru still aspires to be a villain telling Gru that someone has to keep the legacy alive, now enjoying a friendly rivalry with his secret agent brother.
- "I'm so happy! He he he he!" - Dru after meeting Felonius Gru.
- "Feast your eyes on...Dad's Lair! Ta-da!" - Dru telling Felonius Gru to enjoy his eyes on his lab.
- "Face it, Gru! Villainy's in your blood!" - Dru after they get off the Despicamobile, at an Unknown time.
- Steve Carell recorded all of the lines for Dru separately from Gru.