The 2008 mecha series Linebarrels of Iron has arrived on Crunchyroll, featuring both English dub and subtitle options. The complete 24-episode run follows Kouichi Hayase, a bullied teenager whose mundane existence is shattered when he gains control of a colossal humanoid robot called the "LINEBARREL," plunging him into a world of intense battles and espionage.

Produced by Studio Gonzo, a studio with a history of notable mecha and action series like Vandread and Blue Submarine No. 6, Linebarrels of Iron adapts the seinen manga of the same name. The series leans into super robot conventions, intertwining explosive action sequences with Kouichi's difficult transition into heroism and the moral complexities that accompany immense power.

While the anime itself is a standalone narrative, it is part of a larger franchise that includes related manga and short-form side stories. The full series offers a complete arc for viewers seeking a classic super robot narrative with a focus on a protagonist's growth under extreme pressure.