The Little Mermaid/Teenage Mutant Ninja Turtles

Cast

 * Prince Eric as Leonardo
 * Sebastian as Donatello
 * King Triton as Raphael
 * Flounder as Michelangelo
 * Grim as Splinter
 * Ariel as April O Neil (Both start names with letter A and both end names with letter L)
 * Melady as Irma
 * The Shark as Shredder (Both start names with letter S)