The Freerunner is a skin for the Pathfinder class. It was released in the Twinfusor update and can be unlocked for 975 Gold.
"Free traders are the lifeblood of tribal commerce. Traders have to be tough and strong, the weak ones vanish, victim to pirates or tribal raiders. Freerunners take on the most difficult and dangerous trade routes, seeing their goods to the far edge of the Wilderzone." In-Game Description.
Trivia
The Freerunner is known as the "Fuckugly Skin" . The skin also comes with a turquoise jetpack boost. Like all other skins, the Freerunner can be unlocked for the new lowered price (475 Gold).