Dr. Slump/The Little Mermaid

Cast

 * Arale as Ariel (Both start with the Letter A)
 * Sun as Eric
 * Koizumi as Melody
 * Azumi as Andrina
 * Arale's Mother as Queen Athena
 * Arale's Father as King Triton
 * Bobby (from Bobby's World) as Flounder
 * Tutter (from Bear in the Big Blue House) as Sebastian