Hank, voiced by Ed O'Neill
Where you've heard his voice before: The Modern Family star has voiced characters on Family Guy, Handy Manny, Wreck-It Ralph, and The Penguins of Madagascar.
Bailey, voiced by Ty Burrell
Where you've heard his voice before: The Modern Family star voiced Parker in The Penguins of Madagascar, Mr. Peabody in Mr. Peabody & Sherman, Big Jack on Doc McStuffins, and Captain Marvel on The Super Hero Squad Show.
Charlie and Jenny, voiced by Eugene Levy and Diane Keaton
Destiny, voiced by Kaitlin Olson
Where you've heard her voice before: The actor, who is known for her role as Dee Reynolds on It's Always Sunny in Philadelphia, has voiced characters on The Simpsons, Bob's Bugers, Unsupervised, Brickleberry, and Family Guy.
Becky, voiced by Torbin Bullock
Where you've heard his voice before: The film editor, who has been on editor on Pixar films like Monsters, Inc., Toy Story 2, and A Bug's Life, voiced several additional voices in Cars.
Mr. Ray, voiced by Bob Peterson
Where you've heard his voice before: Oh, you know, he voiced Roz in Monsters, Inc. and Monsters University AND Dug and Alpha in Up.
Nemo, voiced by Hayden Rolence
Where you've heard his voice before: This is the actor's first time acting in an animated film. (The original Nemo was voiced by Alexander Gould, who grew up to star on Weeds.)
Marlin, voiced by Albert Brooks
Where you've heard his voice before: The actor has voiced several characters on The Simpsons, such as Dr. Raufbold, Hank Scorpio, Tab Spangler, and Brad Goodman.
Crush, voiced by Andrew Stanton
Where you've heard his voice before: Andrew Stanton, who co-wrote and co-directed the film, has lent his voice to WALL-E, Cars, The Incredibles, Toy Story 2, A Bug's Life, and Toy Story.
Dory, voiced by Ellen DeGeneres
Where you've heard her voice before: The talk show host, who voiced Dory in Finding Nemo, has also voiced a character on The Simpsons.