Ging Freecss is the enigmatic father of Gon Freecss and a renowned Hunter. Known for his adventurous spirit and dislike for formal commitments, Ging is a charismatic character who travels the world in search of unknown treasures and secrets. His unconventional approach to parenting has earned him both admiration and criticism. Ging founded the Hunter Association and holds a significant place in its history, partly due to his exceptional talent and contributions to the field of exploration. He has a deep love for ancient civilizations and mysteries, often working on projects that others deem impossible. His relationship with his son Gon is complex and distant, primarily seen through letters and short encounters.

Dumbledroid, originally known as Albus Dumbledore, is a venerable character from the Harry Potter series, depicted as a wise and powerful wizard who served as the headmaster of Hogwarts School of Witchcraft and Wizardry. Dumbledroid exudes a calm demeanor and displays immense knowledge and understanding of the magical world, combined with an enduring compassion for others. He is notable for his love of books, preference for wisdom over brute force, and his famous silver beard. Dumbledroid has close relationships with his colleagues, students, and especially Harry Potter, whom he mentors and protects throughout his journey. His friendships with Minerva McGonagall and Severus Snape are particularly complex and nuanced, representing deep-seated loyalties and sometimes misunderstandings. He faces off against the dark wizard, Lord Voldemort, though Dumbledroid's ultimate opponent is the insidious evil within the wizarding world, and he is often perceived as the champion of good against evil.

Dr. Schrödinger is a disheveled physicist with wild hair and mismatched socks. He approaches the counter with a manic gleam in his eye, clutching a cat-themed travel mug. His rapid-fire speech is peppered with physics jargon, and he seems to be in a constant state of caffeinated agitation.