Connolly, Kelly Macdonald and Julie Walters are among the many stars who lend their voices to Brave, which is the story of a young Scottish princess who must save her village.
In a recent interview, Connolly explained that the family struggles in Brave remind of his own life.
"It's the triumph of good over evil. But it's also about a little girl becoming a woman and getting to understand things that are really quite difficult to understand," the comedian explained, according to Flicks and Bits.
He went on: "Brave goes through her whole growing up process. It's really quite unique because the lead is a little girl, who becomes a big girl in the process - a red-haired little girl, who becomes a big girl in the process.
"A lot of things that I've never seen accomplished before on screen. It's about her relationship with her father, her relationship with her mother. It kind of reminded me of my own family."
Connolly also revealed that he sees further similarities to his life in the kind-hearted king he plays in Brave.
"I'm Fergus, I'm the King - and I like being the King! I like him because he's a good warrior and all that, he's a good shot with his bow and arrow," he joked.
"But actually he's not quite what he seems. He's much softer than he appears, because he's massive, he's like a mountain, he's really loud. But actually he's quite soft and warm underneath."
Brave opens on June 22 in the US and on August 17 in the UK.