- Milestone Celebration: The game celebrates both franchises' 25th year, as Capcom released the game at both the end of Street Fighter's anniversary and the day of Mega Man's anniversary.
- What Could Have Been:
- Yang was considered as one of the bosses, but was replaced by Chun-Li. His supposed boss weapon, Sei'ei Enbu, is still in the game via a code. One of the enemies in Chun-Li's level bears some resemblance to him and his brother Yun.
- The creator wanted to include alternate costumes for the bosses as well as a second playable character, though the second one would be from the Street Fighter franchise.
Trivia / Street Fighter X Mega Man