Miss Atlantis is the Medici Bros. Circus’ resident mermaid who spends much of her time isolated in a tank.
Behind the scenes
Sharon Rooney was cast to portray the lonely mermaid. “When you first see Miss Atlantis, she’s not the happiest member of the circus family,” says Rooney. “She’s on her own quite a lot and keeps herself apart, like a sad little fish. But as the story grows, so does she, and she starts to come into her own and become part of the family.”
Rooney was tapped to sing the iconic song “Baby Mine” in the film. “It’s such a powerful moment,” says Rooney. “Separating a new mom from her baby is just so awful, and I think the troupe all feel it in their hearts. We made up a backstory for Miss Atlantis — I think as an actress, it’s really important to know why she’s singing what she’s singing. It’s such a powerful song.”
Miss Atlantis’ costume consisted of more than 100 overlapping scales, which were hand stitched. Alternating rows of black and turquoise, the scales were constructed from three to four layers of fabric with sequin borders to give each scale a reflective quality.
Miss Atlantis is introduced as one of the circus performers who is billed as one of the world's only living mermaid where she and the other performers help set up the Medici Bros. Circus tent. She and the other circus performers later gaze upon the birth of Jumbo Junior in awe. Throughout the film, she is one of the performers who appear in the freak show section. Later after the circus tent collapses due to Mrs. Jumbo's rampage across the circus, Atlantis later sings "Baby Mine" by a campfire, as all the circus performers share their condolences after the incident causing the circus tent to collapse happened earlier.
Furthermore, Atlantis and the other performers travel to Arkansas in the Dreamland attraction as Dumbo's act was a success. After it is found out that Vandevere Enterprises has fried all the circus performers, Holt, his children Joe and Milly, and the circus performers plan to rescue Dumbo by releasing back into the wild him alongside his mother. Atlantis plays an important role in arriving at Nightmare Island by diving into the attraction's water pretending to be a mermaid wanting freedom, outsmarting the guards trying to stop her while the other performers barge in an take the transport vehicle with Mrs. Jumbo in it just before the park owner V.A. Vandevere and his guards try to stop the circus troupe. Later, Atlantis, Holt's family, and the rest of the circus performers spend their last moments with Dumbo and his mother before they get released into the jungle.
Later when the circus is re-established as Medici Family Circus, Miss Atlantis remains her duty as a circus performer just as Max Medici describes Atlantis as the Shakespearean-reciting mermaid alongside Puck.
- Her last name "Atlantis" is a reference to a legendary island which sunk to the bottom of the sea in mythology.