"[V]isually splendid and ethically serious....The movie is also refreshingly quiet, using music sparingly and showing as much attention to aural nuance as it does to visual detail."
New York Times

"[A] piece of animation that's involving across a spectrum of comedy, action, even drama....Blessedly funny, there is also a surprising air of poignancy about much of it..."
Los Angeles Times

"[O]ne of the year's most clever and visually arresting computer-animated films, enlivened by a well-developed and credible cast of characters who just happen to be superheroes."
USA Today

"[A] great story, a rich micro-universe of pixel-driven cartoon characters with more depth, complexity, and emotional maturity than those in most live-action dramas....Indeed incredible."
Entertainment Weekly

"[A] film that breaks fresh ground....Bird has crafted a film -- one of the year's best -- that doesn't ring cartoonish, it rings true."
Rolling Stone

"[Bird's] ingenious self-penned script is heaving with brilliantly realised characters, snide putdowns and sharp one-liners that enhance the head-spinning action sequences with razor-sharp wit."
Uncut

"[A] light comedy at heart....[The film] manages a great deal of genuine excitement..."
Sight and Sound

"The storytelling is as witty as it is brisk."
Premiere