The Zombie Outbreak

The Zombie Outbreak was several events where Labs and even individuals started. It is an outbreak of a cannibalistic virus often seen in horror movies. Season 2, Episode 2 was the first episode in the series to show the sequence of events that would lead up to the violent outbreak. A lab scientist, and his friend were tasked to deliver a virus to a testing warehouse. The friend dropped the tube, causing the gasses inside to spill out and turn both of them into zombies. It took Mario and his friends to put an end to the virus in the end of the episode. Season 3, Episode 5: After a year had passed from the evil villain, Mike Stone, the same testing warehouse from earlier had found out about a second virus. Mike, revived and hungry for power saw this as a perfect opportunity to release havoc on the town of Daleburry. It once again took a hero, Henry Twixx, to stop the virus. Season 5, Episode 8: Iron Golem had received a VHS tape made by Waluigi. The tape showed him saying threat after threat that if he didn't get what he wanted, he'll drop his new toxin in the Daleburry river. The story continues in Episode 10, when Mario arrives to stop the virus, but he didn't realize that Waluigi already tested it on Sonic. As the entire population of Daleburry hide away in the Tile Room, the toxin virus seems to die off naturally.
 * Summary
 * Season 2
 * Season 3
 * Season 5