The Little Mer-Girl 2: Return to the Sea (CartoonAllStarsRockz)

Cast

 * Ariel - Princess Peach (Super Mario Bros.)
 * Prince Eric - Mario (Super Mario Bros.)
 * Baby Melody - Baby Talluah (Tickety Toc OC)
 * Velody - Talluah (Tickety Toc)
 * Flounder - Arnold (Hey Arnold)
 * Sebastian - Daggett (The Angry Beavers)
 * Scuttle - Puffin (Wishfart)
 * King Triton -
 * Morgana - Scarlett Overkill (Minions)
 * Undertow
 * Undertow (Small Size) -
 * Undertow's Various Transformations -
 * Cloak and Dagger -
 * Tip -
 * Dash -
 * Grimsby - Strong Bad (Homestar Runner)
 * Max - Gumby
 * Chef Louis -
 * Carlotta -
 * Mother Penguin -
 * Baby Penguin -
 * Handsome Boy -
 * Harold the Sea Horse - Homestar Runner
 * Aquata - Emmy (Dragon Tales)
 * Attina - Rainbow Dash (My Little Pony)
 * Arista - Anna (Frozen)
 * Andrina - Rapunzel (Tangled)
 * Adella - Usagi Tsukino (Sailor Moon)
 * Alana - Eliza Thornberry (The Wild Thornberrys)
 * Captain of the Ship -
 * Sailor 1 -
 * Sailor 2 -
 * Trumpeters -
 * Drummers -
 * Blonde Haired Girl in Orange Dress -
 * Chubby Boy in Blue Suit -
 * Skinny Boy in Green Suit -
 * Waiter who passes by Melody -
 * Music Conductor -
 * Music Orchestra -
 * Waltzing Children -
 * 5 Male Penguins -
 * Flounder's Kids -
 * King Triton's Guards -