|Game Debut||Danball Senki (PSP)|
|Anime Debut||Episode 01|
|Appears in||Game, Anime|
|Voice Actor||Yasuhiko Tokuyama|
|Occupation|| Former Black Division Agents|
Eclipse Head Pilot
|Affiliation(s)|| Innovator (defected)|
|LBX:||Deqoo, Deqoo Kai|
Masashi Hosoi (細井 将志) is one of Eiji Yagami's personal agents in the Danball Senki series.
He has light blue hair, a long face, and rather unique eyebrows for the series.
He is often seen as being silly, along with his comrades. However, he is loyal to whomever he works for.
- All three of the agents resemble the three villain stooges in Yatterman, in slight similarity with height, appearance and personality.
- He was originally an ace air force pilot before becoming an Innovater agent, demonstrated when he piloted Eclipse with no problems.