A goblin temporarily transformed into a handsome human by dark magic. He initially flirts with Marnie and assists Aggie before being frozen by Kalabar's forces. Later, he loses his human form during the Grey Spell crisis but is restored through clever spellwork, maintaining his friendly bond with the Piper family.
Both characters function as local contacts within Halloweentown.
Benny drives the children through Halloweentown, while Luke is encountered later in the town during the search for potion ingredients.
Luke and Ghost are connected indirectly through the potion quest.
The children collect the sweat of a ghost as one of the ingredients needed to activate Merlin's talisman.
Their interaction develops from awkward flirting into friendly support.
Luke makes a clumsy pass at Marnie, later helps her climb onto the jack-o'-lantern, and receives a kiss on the cheek.
Luke provides Aggie with information about the supernatural threat.
Luke tells Aggie that the evil creature wants Merlin's talisman and takes her to the abandoned movie theater.
Luke opposes Kalabar's attempt to conquer both worlds.
Luke helps Aggie investigate the evil creature, then assists Marnie against Kalabar after Kalabar is revealed as the demon.
Explore the full interactive character relationship map of Halloweentown
Related entry on Wikidata (Q29380372), public domain (CC0).