Red Sun/Blue Moon Tournament

The Red Sun Tournament (レッドサントーナメント) or The Blue Moon Tournament (ブルームーントーナメント) is the last NetBattle tournament that Lan Hikari and MegaMan participate in Mega Man Battle Network 4. Both are global tournaments that happened at the same time, with Lan participating in the one with the same name as the game's version. It is held by the World NetBattle Association (WNBA). The competitors MegaMan can face are:
 * Mr. Famous and KendoMan
 * Ivan Chillski and ColdMan
 * Jack Bomber and NormalNavi
 * Paulie and Jammer
 * Raoul and ThunderMan (Red Sun only)
 * Raika and SearchMan (Red Sun only)
 * Chaud and ProtoMan (Blue Moon only)
 * JunkMan (Blue Moon only)

After the tournament, Dr. Regal reveals to Lan that the tournaments were held to find the world's best NetBattlers, one to send his NetNavi to Duo's asteroid and stop it, and other to use his advanced operation skills to operate satellites and plot the course of the asteroid.