The final boss of Megaman Battle Network 4 is Duo. It does not matter which version you have. However, after defeating Duo, there are optional bosses.
If you mean hate, then I can explain why. People hate Megaman Battle Network 4 because in order to beat the game, you have to start a new game (a harder level) to get souls and chips you need. That is very annoying and it's just terrible. Chips, libraries, and other important things aren't lost when you start a new one, but you have to battle the boss and final boss 3 times is very just horrible. So, some people just skip that game and some don't. Even if it's bad, it's still a Megaman Battle Network game.
In MegaMan Battle Network 2, you can obtain the Muramasa sword by defeating the optional boss, the "Swordy" enemy, located in the Undernet. After defeating Swordy, you'll be rewarded with the Muramasa Battle Chip. Make sure to have the necessary skills to defeat this challenging enemy, as the Muramasa is a powerful chip that allows for strong sword attacks.
Palmer is the final boss....... but it depends in where you started at........
Cyber Beast Gregar is in the Copybot Comp. The Copybot Comp is the last stage of the game. After you beat all the other bosses in the Pavilion, you have to battle Gregar. Gregar is the final boss.
The final boss that you play against is Ansem.
Final Fantasy VI's boss theme is called Decisive Battle.
Corvus
You can either fight Omega in the game (He's the final boss) or look it up on youtube. the song's called cannonball and it's by the Mythos.
In MegaMan Battle Network 2, HP Memories can be found in various locations throughout the game. Notable locations include the shop in ACDC Town, where you can purchase one after defeating the first boss, and the secret area in the Undernet, where you can find additional HP Memories. Additionally, some can be obtained by defeating specific enemies or finding them in hidden areas. Be sure to explore thoroughly and check all available locations to maximize your HP.
get the 7 chaos emeralds
You need the gigantic blue ones. You know the ones with the nunchuks and kunai and shurikens. But don't use the red ones, they are not that bright. But once you get past the boss you should get rid of the ninja because they will turn on you later on.
The Song Is: Pokemon Battle Revolution Final Boss Music If You want to Download The Music Here it is: http://www.sendspace.com/file/wp6xnr