Viruses

The hideous Viruses are contagious and contaminate anything it comes in contact with.They 1st appeared on the original Dr. Mario NES game and reappeared in other Dr. Mario games since. They made Dr. Mario's life difficult and whether evil Bowser had anything to do with their appearance is unclear. Dr. Mario had to throw his Megavitamins into contaminated bottles and match the Megavitamins' colors to the nasty microscopic organisms. Their newest appearance is on Dr. Mario Virus Buster WiiWare for the Nintendo Wii. Apart from the Dr. Mario games, they appeared on Super Smash Bros. Melee as a trophy along with Dr. Mario and his Megavitamins.