Henry, also known as Prince Harry, is heir to Coburg's throne. As a child, he exhibits a spoiled and troublesome nature, frequently playing pranks on castle staff. This behavior stems from a desire for attention after his mother's early death and his father's preoccupation with royal duties.

A pivotal childhood experience sees him abducted by monsters at Coburg Castle. During a rescue attempt by Luca and his father Pankraz, Bishop Ladja intercepts them. Pankraz is killed in the confrontation, and Henry endures ten years enslaved alongside Luca at Mount Azimuth. This captivity forges resilience and a sense of responsibility within him.

After escaping slavery, Henry initially accompanies Luca to honor Pankraz’s dying wish. However, learning of Coburg’s army sacking Whealbrook compels his return. He discovers his half-brother Wilbur has assumed the throne under the influence of an imposter queen dowager. Henry helps expose the imposter using Ra’s Mirror and remains in Coburg to support Wilbur in governing, parting ways with Luca’s group.

Years later, Henry reappears during Luca’s final confrontation with Ladja. He mobilizes Coburg’s military forces, providing crucial reinforcements against Ladja’s monsters. This intervention aids Luca in overcoming the enemy and confronting Ladja directly.

Henry possesses green hair and teal eyes. His childhood attire includes a blue royal tunic, white pants, a red cape, and a rapier. As an adult, he wears similar regal elements featuring a sleeved vest and trimmed cape.