This MM4 Hack Rom replaces Mega Man sprites with those of Proto Man.
Some cutscenes, text and color palettes were also changed.
Enjoy!
Database match: Mega Man 4 (U)
Database: No-Intro: Nintendo Entertainment System (v. 20210216-231042)
File SHA-1: D1A971A64288916E63CB0DFD23E3F9E894C3923B
File CRC32: 49DF22C4
ROM SHA-1: 673A888C468ABE33FB0B3F063C6837DD21D5D32B
ROM CRC32: 2BC67AA8