The Pyro made its debut appearance during the Raiders vs. Bottle Rockets special event, and was trainable at the Barracks during this short period as well. The Pyro is now a permanently trainable unit, found in the Frontier Recruitment HQ. Despite his name, he is in fact armed with a bottle rocket. Although his weapon does surprisingly low damage, it also has a chance to stun the enemies caught in the area of effect.
When the Pyro was first available for the short period of time, he only required a player level of 13 to be trained out of the Barracks, offering players a cheap, indirect attack with the ability to stun. However, now that he is permanently available, the player level requirement was raised to 37, where numerous other units are available who can provide more damage output, more reliable stunning effects, and/or more health and armor to survive against stronger foes. Despite this, he still may see some use in occupations or as a filler unit because of his extremely low healing and training costs. For his UV, the Frontier Pyro has a remarkably high critical and stun chance which make his inclusion in PvP battles worth considering. Additionally, he can target (and therefore stun or kill) air units.