Does mugen has a virus

Do you mean MUGEN the game? NO, it does not. I have it on my computer, it works fine and it rly fun! It might have a virus if you downloaded it from an unknown site. To check to see if the program you downloaded has a virus, download AVG from Download.com and scan the file with it. If it is a virus, then delete it and next time download Mugen from Mugen-infantry.net