The role is originated by Sean Palmer and Drew Seeley also played the role. It is explained through dialogue that Eric's father has passed away, and it is Grimsby's duty to help Eric find a bride so he can return to the throne properly, despite Eric's affinity for exploring the seas.
Eric contributes singing vocals to the opening song "Fathoms Below", and performs two solo songs: "Her Voice", a song about Eric's obsession with Ariel's voice that had been written for the original film but discarded, and "One Step Closer", a new song where Eric helps Ariel express herself through dance. Eric also provides vocals in the quartet "If Only", where he expresses confusion over his attraction to Ariel, and his fear that if he finds the girl with the right voice, he might lose Ariel.
A new subplot in the stage musical is a singing competition where the eligible princesses in all the land are invited to sing for Eric. The princesses perform in the song "The Contest", which is set to the tune of Ariel's song "Part of Your World".