"P Sherman, 42 Wallaby Way, Sydney" wouldn't be the only thing in Dory's mind in the upcoming sequel to 2003's "Finding Nemo".

For starters, our favorite blue tang fish will have to contend with a school of new underwater friends, and possibly foes.

During the recently concluded 2015 D23 Expo, Disney Pixar announced two new cast members who will be joining Ellen DeGeneres in next year's "Finding Dory."

"Modern Family" actor Ed O' Neill and "It's Always Sunny in Philadelphia" actress Kaitlin Olson are the latest cast members to be named. O' Neill will be joining his fellow TV series co-star Ty Burrell.

According to the film's official Facebook page, Burrell takes on the role of a "misguided beluga whale" named Bailey.

As for the recently revealed cast members, O'Neill plays a "cantankerous octopus" named Hank while Olson will be Destiny, a "kind-hearted whale shark" whom the actress described as someone who doesn't want to be called a shark.

The first official look of the movie was also unveiled during the event. The snapshot shows Dory together with O'Neill's character, the photo can be seen here.

Like Nemo in the first film, Dory gets captured. But instead of a dentist's office in Sydney, Dory is sent to a marine wildlife facility in California, where she eventually meets Hank. She then asks for his help in her quest to know more about here long-lost parents.

The story will reunite "Dory with friends Nemo and Marlin on a search for answers about her past," Disney Pixar revealed via Facebook. The story will also shed more light on her limited memory, her family and the background of how and why she's able to speak Whale.

Albert Brooks and Willem Defoe will reprise their roles as Marlin and Gill while Nemo will be voiced by 10-year-old Hayden Rolence since the original voice for Nemo, Alexander Gould, is already 21 years old.

DeGeneres spoke to People on why she has been spearheading calls to do a sequel ever since.

"Well, it means a lot to me because it is a really sweet character who in the new film will search for her family... And she's flawed, and I think that it's important for kids to grow up and see flawed characters that are lovable and that really, no matter if they make mistake after mistake, they have a little surrounding pack, like a friendship with all these other fish that they travel with that forgive her. And even though they're frustrated with her, they love her."

Taking on the role of Dory's family are veteran actors Eugene Levy and Diane Keaton.

"Finding Dory" will be swimming to theaters in June 2016.