Grug: He is He is initially dim-witted, brawn-over-brains, and superstitious, but through his journey to find a new home, he develops into a more intelligent, courageous, and flexible father who learns to trust his family and accept new ideas, eventually showing acceptance of Guy and his inventions

Ugga: She is nurturing and open-minded mother who is initially deferential to her husband, Grug, but eventually becomes a brave and assertive leader for her family. She embodies both strength and kindness, focusing on keeping her family safe and healthy, and helps the family adapt to change and embrace new ways of living.

Eep: She is rambunctious, independent, and adventurous teenager who yearns for freedom and exploration beyond her family's cave, often clashing with her overprotective father, Grug. She is fiercely loyal, imaginative, and strong but can also be a bit naive and shy. her curiosity and rebellious spirit lead her to embrace the "outside world" and its new inventions, making her a feisty, energetic, and free-spirited cave girl who loves to run, jump, and have fun.

Guy: He is intelligent, creativity, and resourcefulness, which stem from his life as a nomadic hermit and the loss of his family. He is inventive, coming up with ideas and using tools to solve problems, but also exhibits social anxieties and a preference for quiet action over words. Despite an initial nervous disposition and fear of the unknown, he is kind-hearted, capable, and ultimately bonds with the Croods, becoming a beloved and integral member of their family.

Thunk: He is childlike innocence, good heart, and extreme clumsiness, despite being Grug's favourite son for his obedience. He lacks intelligence, has vivid imagination, and a big heart but also bad coordination and struggles with basic knowledge and hunting. he is imaginative, caring, and loves to have fun, often seeing the world through a unique, fun-loving perspective.

Sandy: She is as feral and vicious as a baby wildcat. In a dangerous world full of creatures trying to take a bite out of her, she is not afraid to bite back.

Gran: She is stubborn, a mean and sarcastic streak, particularly towards her son-in-law Grug, but also a hidden layer of loyalty and surprising bravery. She is a formidable, ferocious cavewoman and the matriarch of the family, who uses her wit and sometimes her staff to navigate dangers

Hope Betterman: She is arrogant, tightly-wound matriarch who prioritizes her family's "modern" way of life and safety through isolation, believing she knows best. She builds walls to keep the outside world away but learns from the Croods to break down those walls, embracing a more primal, connected approach to family, and ultimately becomes a loyal friend to Ugga.

Phil Betterman: He is intelligent, creative, and modern patriarch who is initially cowardly, mild-mannered, and overprotective. Though he is intelligent and capable of inventing solutions, his initial fearfulness and avoidance of conflict make him seem spineless, a trait that changes as he bonds with Grug.

Dawn Betterman: She is shy, nervous, and kindhearted girl who grew up in a protective, sheltered environment, making her quirky and naive about the outside world. She is best friends with Eep and has a strong desire for adventure and to experience life beyond the walls of her sophisticated home.

Chunky: He is loyal, sweet, and affectionate pet for Grug and a member of the Crood family. He is initially determined and relentless, a wild animal with impressive predatory skills, but his fear of the dark leads to a bond with Grug, revealing his "cute kitten at heart" nature once his fears are addressed.

Wolf Spiders: They are aggressive and protective of its territory and young, but they are also shown to be capable of forming bonds and living in harmony with outsiders, much like dogs, and are loyal to their own families

Wolf spider pup: He is playful and energetic pup in the wolf spiders pack

Moomath: It resembles a mammoth but with white and black fur on them and they also are friendly