Auliʻi Cravalho

Ariel

Shaggy

Sebastian

Graham Phillips

Prince Eric

Amber Riley

"Daughters of Triton" Emcee

John Stamos

Chef Louis

Queen Latifah

Ursula

Jodi Benson

Self - Host / Ariel / Vanessa (voice)

René Auberjonois

Louis (archive footage) (voice)

Christopher Daniel Barnes

Prince Eric (archive footage) (voice)

Pat Carroll

Ursula (archive footage) (voice)

Paddi Edwards

Flotsam and Jetsam (archive footage) (voice)

Buddy Hackett

Scuttle (archive footage) (voice)

Jason Marin

Flounder (archive footage) (voice)

Kenneth Mars

King Triton (archive footage) (voice)

Edie McClurg

Carlotta (archive footage) (voice)