The hellion and hellbat are units which underwent much development in StarCraft II. The hellion went through 600 design changes over the course of development. Various names were pitched, including the jackal, loki and fire bike. In its earliest stages, the vehicle was a hoverbike much like the Vulture, and possessed a powerful anti-infantry railgun. Eventually the design settled upon was a three-wheeled vehicle. The response on the development team was rather mixed about the three wheeled version, and while taking an opportunity to quickly make non-lethal civilian variations the four wheeled version was made. The three wheeled version was reused for the Outback Hunter.