MegaMan NT Warrior, known as Rockman.EXE (ロックマンエグゼ, Rokkuman.Eguze?) in the original Japanese language version, is an anime and manga series based on the Mega Man Battle Network series of video games. Despite the common ground, the game, anime, and manga versions of the Battle Network series all diverge heavily from each other.

MegaMan NT Warrior follows the adventures of Lan Hikari and his NetNavi partner Megaman.

Source: Wikipedia