The Prince and the Mermaid

 is the ninth episode of "Backyardigans x Frontyardigans" written by Hornean.

Characters

 * Austin (Prince Austin)
 * Uniqua (Mermaid Uniqua)
 * Tyrone (King Tyrone)
 * Andrew (Grand Duke Andrew)
 * Pablo (Prime Minister Pablo)
 * Thomas (Steward Thomas)
 * Sophie (Mermaid Sophie)
 * Henwen (Mermaid Henwen)
 * Tasha (Sea Witch Tasha)