This article covers the third series of the MegaMan NT Warrior anime series, known in Japan as . Like Axess, Stream is comprised of only one part with 51 episodes. Currently, there are no plans for an English adaptation of the series.
Stream premiered in Japan on October 2, 2004, directly one week after Axess concluded. It ran until September 24, 2005. Mid-way through the series, the 48 minute feature-film Rockman EXE: Program of Light and Dark premiered in Japanese theaters on March 12, 2005. The movie would directly connect with the events in Stream and is necessary for understanding the full plot of the series.
The title Stream is meant to describe the flow of one storyline into the next, and this holds true as Stream picks up immediately where Axess left off. In relation to the Mega Man Battle Network video games, Stream uses many prominent characters and concepts from Battle Network 5, though it still borrows elements from various previous Battle Network titles, especially Battle Network 4. The series is often criticized, however, for its overuse of CrossFusion; many fans claiming the emphasis is removed from NetNavi activity and put moreso on NetOps. It was also notorious for many filler episodes that did not directly contribute to the overall plotline in any way, such as the infamous beach episode (44). Compared to Axess, Stream is also much more light-hearted and comical with a very diverse cast of characters.
|J#/E#|| English title|
|Japanese air date||English air date|
There is no official confirmation on the movie's exact placement in Stream's storyline. However, because of Dex and Dingo's appearance in the movie, it most likely occurs shortly after episode 22 in which the boys move to DenTech City, but not after episode 29 when elements from the movie begin appearing in the series, specifically those concerning Baryl and Colonel.
|Title||Premiere date||DVD release date|
| Program of Light and Dark|
(Hikari to Yami no Puroguramu ロックマンエグゼ 光と闇の遺産（プログラム）)
|March 12, 2005||September 21, 2005|
|Beams of light are tearing through cities all over the world, deconstructing anything they touch into network data. Dr. Hikari recognizes this as the dreaded "Spectrum" program, and he commands Lan to quickly rush and destroy something called the "Tadashi Hikari" program. As MegaMan rushes to do so, Bass assaults him, but Colonel intervenes. The destruction of the program is interrupted when a large beast named Nebula Grey appears and absorbs it, causing the NetNavis to retreat. Just then, the Spectrum beams tear through an amusement park, deconstructing many of Lan's friends. Dr. Regal reappears, having transformed into a data being after his demise in Axess, and plans to extract the programming written on Dr. Hikari's retinal pattern, completing Spectrum and transforming the planet into network data. Lan, Chaud, and Raika work together to infiltrate a Netopian army base where Dr. Regal goes through with his plan, and Lan encounters a man named Baryl who claims to be Colonel's NetOp. MegaMan jacks-in to the core of the program to stop Regal, and Bass also appears. In a pinch, MegaMan sacrifices his Ultimate Program to Bass, hoping he can defeat Nebula Grey with it. The resulting fusion creates BassCross MegaMan, a being that obliterates Nebula Grey and spoils Regal's plan. The military base begins to crumble, and Bass absorbs Nebula Grey's power for himself. The NetSavers and Dr. Hikari escape, but Baryl remains behind, uttering the reassuring claim that he is "immortal." Everything deconstructed by Spectrum returns to normal, and peace is restored.|