He is voiced by Shunsuke Takeuchi in Japanese Version and Aaron LaPlante in English Version.
He wears goggles on his mantle and red hoodie-like-cape.
He have golden/yellow eyes.
He is a servant of Homeostasis and works to further its agenda of maintaining the stability of the Digital World. His main duty is to observe Meicoomon and keep track of her movements.
He also replaces Gennai, who is missing, as Homeostasis's messenger to those who can help preserve stability.
Digimon Adventure tri.
On June 19, 2005, he observes Meicoomon walking in the port. Later, he observes the DigiDestined after their fight against Kuwagamon. Several days later, he observes Alphamon attacking Meicoomon, and fades away.
Some days later, he stares at the building where Meiko Mochizuki lives. When Leomon is talking to the DigiDestined about the infection, he hears their conversation. Leomon detects him, but Hackmon leaves before being caught. He later spies as Meiko shows her festival outfir to Meicoomon. At Tsukishima General High School's cultural festival, Hackmon observes the fight against Imperialdramon.
Some time after Meicoomon's disappearance, Hackmon reports to someone that he still can't find her, but thinks she's not in the Digital World, and that he'll continue to look.
Hackmon is a messenger of Homeostasis replacing Gennai (who actually is dominated by King Drasil's influence), then later tells about Maki becoming an ally of King Drasil (Revealing that Maki was the one who was responsible for the Digital World Reboot Event). Hackmon finally warns Daigo about the progress of King Drasil's plans for Digimon and humans. He also warns Daigo that Meicoomon is the "Libra" that can cause the destruction of both worlds if it falls into the wrong hands. Hackmon disappears after it.
He later reappears to warn Daigo again for the upcoming catastrophic event that are about to occur if Meicoomon is not stopped. He tells him that Homeostasis decided to take the matter on its own hands as DigiDestined have failed to solve the situation.
He warp digivolves to Jesmon in an attempt to destroy Meicoomon.
- His English Voice Actor, Aaron LaPlante also voices Joe's Dad from Determination and Meiko's Father from Confession.
- In Confession, Hackmon's dialogue from the scene where he reports about not knowing Meicoomon's wherabouts has been deleted from the English dub.