Originally, RJ had a family of raccoons. But his mean and selfish father (Voiced by Will Arnett) kicked him out when he was young (Jake T. Austin voiced his young version) after failing to hiss at a human
After that, RJ became homeless was forced to live on his own and soon decided to explore the world to find a new family.
In the film, RJ is seen trying to get snacks from a vending machine. When he fails, RJ becomes so desperate that he tries to raid a large food cache belonging to his friend Vincent. But while trying to leave, he wakes Vincent and loses both the food and the red wagon that it is on when a truck runs it over. Angry at RJ for letting this happen, Vincent, turning on his friend, stops the raccoon from escaping and opens his jaws to swallow him whole. RJ begs for mercy and Vincent gives RJ a whole week to return the food to him because if he does not, he will hunt down and kill RJ. He then sets the raccoon free and goes back to his cave to sleep for the winter.
RJ soon stumbles upon the forest community struggling to find food. RJ, who sees the entire commotion, convinces the other animals that it is easier to raid the humans' garbage for food rather than forage for it, and they manage to get enough food to keep them from starving. He helps them scale the Hedge, even though Verne recalls the Verminator.
Worried for his family's safety, Verne decides to return the food to the humans. RJ tries to stop him, resulting in an argument between the two. This attracts the attention of a playful Rottweiler, who chases them across several lawns before all of the food the animals gathered is destroyed. RJ then blames Verne who, while trying to defend himself, makes a comment that hurts the others' feelings.
RJ helps Verne reconcile with the others. He also discovers that Gladys has just restocked her pantry with a large food supply for an upcoming party and concocts a plan to get past the exterminator-planted booby traps in her backyard. Working together under cover of darkness, the animals get the food. RJ and Verne get into another argument, this time over a can of "Spuddies" potato chips, during which Verne (and the others) learn of RJ's true motives. Gladys wakes up, discovers the animals in her house, and calls VermTech. The Verminator, whose real name is Dwayne LaFontant, arrives and traps the animals except for RJ, who escapes with the food.
RJ takes the food to a now-awake Vincent, but when the latter points out RJ's treachery, the raccoon decides to sacrifice the food to save his friends. This angers Vincent, who chases RJ as he pursues Dwayne's truck. Verne is happy to see RJ again but the others no longer trust him since he abandoned them. They nearly thwart RJ's efforts to help until Verne finally convinces them otherwise and they trust him again. The animals then subdue Dwayne and turn his truck toward home, but the truck goes out of control and demolishes Gladys' house.
The animals hide in the hedge, trapped by Vincent on one side and Gladys and Dwayne on the other. RJ and Verne get an idea to give Hammy a can of cola, which puts him into overdrive. The plan works, and Dwayne almost escapes over a fence, but he accidentally steps on a squeaky toy, thus alerting Nugent (the same dog that chased RJ and Verne earlier) and making him bite Dwayne in the leg, making him scream in pain.
Back in the forest, Verne tells RJ that if he had explained what he was trying to do in the first place, the others would have helped (which he claims is what families do) and welcomes him back to the family. Meanwhile, their food supply is refilled. They all now know that they are ment to be with each other .
In a post-credits scene, the animals go to the vending machine seen at the beginning of the film and cause every product to fall into the access bin. However, the amount of snacks prevents the access door from opening.
RJ is a raccoon conman, more or less leading the woodland gang and making various schemes for varied objectives- and just as varied success. His friend Verne often objects to his motives, but is always beaten or otherwise humiliated at some point. When he brought the food to Vincent, he decided to be a better person in order to rescue his friends.
- Originally, RJ was going to be voiced by Bill Murray in the film and later, Jim Carrey, but then Bruce Willis got the role.
- RJ always calls Hammy by different variations of his name, such as Hamilton and Hamsquad.
- He appeared to not have had a family before meeting the animals.
- RJ's cunning behavior had made him be a false antagonist of the movie, but he was never a true villain as Vincent was.
- RJ is a pawn for Vincent because Vincent told him to get food for him or he'll be the food. RJ is a tragic misunderstood character of the film since he was under Vincent's wing and all of the wrong means he encountered were suspicious Verne, and the other animals's distrustful behavior. He just wanted to be fit in with his new friends.