Pixar's upcoming animated film, Inside Out, will feature the voice of Amy Poehler as Joy -- one of five emotions, including Fear (Bill Hader), Anger (Lewis Black), Disgust (Mindy Kaling) and Sadness (Phyllis Smith) -- inside the head of Riley, an 11-year-old hockey-loving girl on the cusp of adolescence.

Speaking to Brisbane Times, Poehler shared that Inside Out is a film for both young and grown-up audiences. "I think as a parent if you watch this film you are reminded, 'Ah! I spend an inordinate amount of time worrying about my child's happiness'. And constantly trying to keep them out of pain."

"...When they're little it is about trying to keep them alive. Meeting their needs. But then when they become these human beings that talk and have human feelings, have friends, have a life, you realise, oh, I'm like Joy, constantly in pursuit of happiness for them and very fearful that they're ever going to be sad, angry, disgusted or afraid," the Parks and Recreation actress added.

"What I love about this film, what I love about Pixar in general, is it says perhaps not only is that going to be OK but it actually may be better. It actually may be better if you abandon the idea that your child will have this perfect life and that they'll never be sad.

Inside Out, which releases on 19 June, has managed to generate tremendous positive buzz around it since it premiered at the 2015 Cannes Film Festival earlier this year.

Poehler revealed that when [co-director] Pete Doctor and [producer] Jonas Rivera told Poehler Inside Out's story she declared it would be Pixar's best movie.

"It actually is a very dangerous and treacherous and interesting thing that Pixar is doing. It's making the stakes very high," she stated. "It's saying that the personality of this person may change and it's not going external. Inside Out is not, 'They have to get the ring, to get the key so that the dragon won't fly across the ... you know'. The stakes are Riley's personality and the setting is inside her head," she added.