MegaMan NT Warrior, known in Japan as Rockman.EXE (ロックマンエグゼ Rokkuman Eguze?), is an anime and manga series based on Capcom's Mega Man Battle Network video game series, part of the Mega Man franchise. The manga series was written by Ryo Takamisaki and ran in Shogakukan's CoroCoro Comic between 2001 and 2006. The anime series, produced by Xebec, ran for five seasons on TV Tokyo in Japan between March 2002 and September 2006, reaching 209 episodes in total. Viz Media produced English-language versions of the manga and licensed the first two seasons of the anime. Despite the common ground, the stories of the game, anime, and manga versions of the Battle Network series all diverge heavily from each other.
The series focuses on Lan Hikari and his NetNavi, MegaMan.EXE as they build their friendship while dealing with threats from various NetCrime organizations. Along with Lan are friends Maylu Sakurai, Dex Ogreon, Yai Ayano, Tory Froid, and their respective Navis: Roll, GutsMan, Glide, IceMan. Although the series originally remains fairly close to the games in terms of storyline, it begins to diverge greatly partway into the series. For example, there is no evidence showing that Lan and MegaMan were twin brothers in the anime, unlike in the games where it is revealed near the end of the first Battle Network game.