TV-Series
Description
Hideaki Mashimo is a supporting character in the anime Digimon Xros Wars: The Young Hunters Who Leapt Through Time. He is a Digimon Hunter, distinguished by his practical, business-oriented approach to the task of capturing rogue Digimon in the human world. His partner Digimon is Dobermon, a sleek, dog-like Digimon with blue eyes who faithfully carries out his commands.

Background information on Hideaki is limited, as he appears primarily in a single episode focused on his activities. He is identifiable by his purple Xros Loader and speaks with a Kansai dialect, which often gives his speech a friendly, down-to-earth quality. His most defining characteristic is his ambition to earn enough money to one day open his own takoyaki stand, and eventually a worldwide chain of stores. This dream is not purely for profit; his genuine desire is to make people happy with his cooking.

In terms of personality, Hideaki is pragmatic and resourceful. He has established a small business for himself in the shopping district, where he tracks down small, coin-like Digimon called Zenimon and Kozenimon who are causing malfunctions in cash registers and ATMs. After resolving the issue, he accepts a reward from the grateful shop owners. However, he is deeply honest and principled. When he discovers that a larger Digimon named Ganemon was deliberately causing the disturbances to feed on human greed and money, Hideaki is immediately angered by the dishonesty. He refuses to participate in the scheme and, at the conclusion of the incident, returns all of the reward money he had previously earned because it was obtained through fraud.

Hideaki's role in the story is as a temporary ally to the main protagonist, Tagiru Akashi. When Tagiru and his partner Gumdramon encounter him, Hideaki explains his system of hunting for profit. Tagiru, excited by the prospect of earning money, agrees to help him round up the troublesome Zenimon. This partnership leads them to Ganemon, the master of the Zenimon, who initially tricks the Hunters into helping him recover his lost underlings. Throughout the episode, Hideaki serves as a foil to Tagiru, demonstrating a more calculated and goal-oriented method of hunting, while also showcasing a strong moral compass that rejects ill-gotten gains. His key relationships are primarily with his steadfast partner Dobermon and with Ganemon, whom he ultimately captures and forces to return the stolen money.

Hideaki experiences a small but significant development during his encounter with Ganemon. He is forced to confront the source of his earnings and realizes that the very problems he was solving were manufactured by a Digimon profiting from human greed. This revelation leads him to reject the fraudulent money entirely and reaffirm his commitment to earning his takoyaki stand funds through honest work. His notable abilities are tied to his hunting skills and his partnership with Dobermon. While he can hunt independently, his most prominent tactic is a DigiXros, a fusion technique. By combining his Dobermon with Tagiru's evolved form, Arresterdramon, they create XrosUpArresterdramon, a faster, centaur-like form that uses Dobermon's incredible speed to overcome Ganemon's swarm of minions.