Mega Man IV
Mega Man IV (released in Japan as "Rockman World 4") is the fourth Mega Man installment on the Game Boy. It was released in Japan on October 29, 1993 and in North America in December 12 1993.
Like other Mega Man GB/World games, Mega Man IV have two sets of robot masters, four from Mega Man 4 and four from Mega Man 5. Mega Man IV also uses BEAT plates for the first time and introduces third Mega Man killer - Ballade. Unlike other GB games, Mega Man IV features an intro cutscene.
In Mega Man Maker
As of version 1.7.5, only assets that made to the game are Ballade related, but as their Mega Man 10 versions. However, some modifications made to certain assets that make a reappearance in Mega Man IV have been implemented into Mega Man Maker.