|Occupation||System Support Worker|
|Relations||Sylphynford Tachibana(younger sister)|
Miki Tachibana (mother)
|Anime||"Umaru and Her Rival"|
|Japanese voice||Tetsuya Kakihara|
|English voice||Scott Gibbs|
He has an average build. He wears a white shirt with a brown vest and a red tie, with a grey pair of trousers and brown shoes.
He enjoys playing video games. He also has interests in anime, that he was recruited as a bright talent, but secretly he seems to know the connection between Komaru and Umaru.
When he was in middle school he was a shut-in, but was influenced to change his lifestyle by an unknown Japanese individual (possibly Kanau)
Alex browses anime content on the work times, even asking Taihei to fix his computer when it crashes on anime websites.
Alex also gets the same eyes and smile as Sylphynford whenever he gets too excited.
In season 2, episode 8, it is revealed that he talks to Hikari about Umaru's indoor persona.