mega man battle network
Rockman EXE (known overseas as Mega Man Battle Network) is a spin off series of Mega Man set in the year 200x. The series spans six games across the Gameboy Advance (with Mega Man Battle Network 5 also appearing on the Nintendo DS). Players control Lan Hikari outside of the game's net world. When it's time to jack into the net and bust viruses, Lan can do so by using his NetNavi MegaMan.EXE contained in a device called the PET (PErsonal Terminal).
Much of the gameplay resembles older Mega Man games as players can defeat bosses and viruses to acquire their "Chip" data and use them as attacks as they see fit. While in the net world, players will control MegaMan.EXE while busting viruses and protecting the web from villians ranging from the classic Wily to hellbent corporations such as Gospel, along with new faces such as Dr. Regal.
After the series' sixth and final game, the Mega Man metaseries developed yet another spin off game in the form of Mega Man Star Force.