Hajime is a young boy with short brown hair and blue eyes. He wears a white long sleeved button-up shirt, a sleeveless light yellow sweater vest, dark blue shorts, black socks, and blue loafers with white soles.
On summer 2017, he replaces his usual shirt and sweater with a white shirt with a yellow part on the upper body and shoulders.
- Hajime Katsura (桂 はじめ)
- Ja: Katsura (桂?). Japanese surname that means "Cercidiphyllum japonicum". Possibly from Ray Kurzweil (レイ・カーツワイル Rei Kātsuwairu?), author of The Singularity Is Near. It might also refer to the Katsura River or Katsurazawa Dam as a reference to the Net Ocean.
- Ja: Hajime (はじめ?). A Japanese masculine name. It can mean "one" (一 ichi?), and with Rei is a pun on "01".
During Haru Shinkai's pursuit on Rei Katsura for the 7code chips, the latter explains his motive: To apprehend Leviathan and rescue his brother (Hajime), who suddenly disappeared along with most of his biodata.
Rei initially thought that it was his solving of Leviathan's cryptic clue that led to Hajime's abduction. It was only revealed much later that Hajime was actually the first person to solve the cryptic clue (taking him almost immediately, while his elder brother took weeks). The cryptic clue was used as a means to recruit someone with great AI knowledge to create a startup tool for the Human Applification Project. After his disappearance, Hajime was then ordered by Leviathan to create Bootmon. However, knowing that the Human Applification Project has grave consequences, Hajime had secretly installed an emergency escape program into Bootmon and activated it just as Leviathan was about to retrieve Bootmon. As a result of defiance, Hajime was modified by Biomon, turning the former into Sleepmon.
Due to Biomon's modifications, Hajime has become an Appmon.
Sleepmon is Hajime's Appmon form.
Notes and references
- 取り巻く人々 | キャラクター | デジモンユニバース アプリモンスターズ：アプモン | 東映アニメーション: "Rei's brother who is 6 years younger than him."
|Digimon Universe App Monsters|
|Main characters:||Haru Shinkai | Eri Karan | Torajiro "Astora" Asuka | Rei Katsura | Yujin Ozora|
|Appmon:||Gatchmon | Dokamon | Musimon | Hackmon | Offmon|
|App Fusion partners:||Navimon, Timemon, and Charismon | Perorimon, Coachmon, and Beautymon | Recomon, Dreammon, and Fakemon | Protecmon, Dezipmon, and Biomon | Bootmon|
|Allies:||Ai Kashiki | Minerva | Denemon Shinkai | Dantemon | Hajime Katsura|
|Antagonists:||Leviathan | Cameramon | Shotmon | Mienumon | Sakusimon | Virusmon | Cometmon | Drawmon | Tubumon | Sateramon | Knight Unryuji | Ultimate 4 | Deusmon|
||Takeru "Watson" Wato | Caught-Up Old Man | 7code Appmon | Appliyama 470 | Sukasimon | Other characters|
||Manga | Appmon Academy!! | 3DS game | Data Carddass | Card Game|
|See also:||Appmon | Net Ocean | AR-Field | App Drive | App Drive Duo | Appmon Band | Appmon Seven Code Band | Appmon Chip | L-Corp | Human Applification Project | Digimon Universe | List of episodes|