Cap_Mush.sprite3 Explained (the fnf part was more for fun lol) So basically, Capn_Mush.sprite3 is just a very old sprite that was once @Captain_Mushroom's OC, though after about a year was replaced. This is where the sprite might go into rage and turn evil for some reason, but no it is just a sprite, meaning it has no thoughts, no emotions, and no life. At least not until the very same virus, that corrupted so many sonic games, had come on to scratch for its new target, fangames. Though, it was almost impossible as no sonic game on scratch has the power the virus needed to take over. Well, at least not until it had found a sprite that seemed to have been left in the dust for a few years now, Captain Mushroom was the sprites name. Though it was not a Sonic OC or character, the virus didn't know if the simple sprite would have the power it needed to corrupt everything, so it took its chances. And sure enough the sprite did.