Red Sun (メテオレッドサン Red Sun? Meteor Red Sun in Japan) and Blue Moon (ブルームーンレイ Blue Moon? Blue Moon Ray in Japan) are Battle Chips from the Mega Man Battle Network series. They first appeared in Mega Man Battle Network 4, each in the version of same name, being given by Yuichiro Hikari near the end of the game. Both appear in Rockman.EXE 4.5 Real Operation, where they can be obtained from StarMan SP with S level in the Undernet tournament.