Himouto! Umaru-chan Wiki

Alex Tachibana 橘・アレックス ( Tachibana Arekkusu?), is a co-worker of Taihei Doma, the son of Miki Tachibana and the older brother of Sylphynford Tachibana.


Alex is a fair-skinned boy with neat short blond hair that has bangs swept to the right side and blue eyes that have crosses like Sylphynford Tachibana (if you look close enough).

He usually wears a light brown vest with a plain white button up shirt underneath. He wears tan khaki pants with brown dress shoes and a red tie.


Alex is an otaku


When Alex was in middle school, he was a shut-in, but he was influenced to change his lifestyle by an unknown Japanese individual (Kanau Kongo).


  • The name Alex means "man's defender, warrior" in Greek.
  • Alex's surname Tachibana means "orange, tangerine" (橘).


  • Alex enjoys playing video games.
    • Just like Umaru Doma, he also loves anime, but he secretly seems to know the connection between Komaru and Umaru. 
  • Alex gets the same eyes and smile as Sylphynford Tachibana whenever he gets too excited.
    • He also loves his sister.
  • In Season 2, Episode 8, it is revealed that Alex talks to Hikari Kongo about Umaru's indoor persona.
  • Alex searches for anime content in working times, even asking Taihei Doma to fix his computer when it hangs on anime websites.