Wes

Wes was an employee at Big River.

Season 1
Wes started to take some of the wild mustangs, to sell, he dumped a herd at a feed lot. When he goes back to work and helps with the mustangs he starts beating them to control them. Ty stands up for the horses and starts a fight with Wes. Later, when he goes to the feed lot he's furious when he finds Lou and Amy releasing them that he shoves her to the ground. Ty and Jack arrive and start a fight, it's only stopped by Lou firing a shot into the air. Tim hears about the incident and fires him. (Born to Run) Jack spots a van sitting up on the road by Heartland over the course of a few days. When Jack is home alone, Wes drives in and starts a fire in the barn. When Jack hears commotion he goes out to see what's happening and sees Wes running away with his hands injured. When Jack is discharged from hospital he spots the truck that he saw before and Wes coming out of it heading to the hospital with his hands burnt. This triggers his memory of what happened and Tim helps catch him and he is later arrested for the fire. (Rising from Ashes)

Season 2
In the middle of the night a figure sneaks into the Heartland barn and takes Spartan. At an auction Amy and Ty find Spartan and are shocked to see Wes buy him. Ty finds Spartan's stall when Wes arrives, they start fighting until Amy brings the brand inspector by having told him the situation. When he learns she has no bill of sale he tells her there's nothing he can do and Wes leaves with Spartan. Ty punctures his tires, to keep him there long enough to talk to the brand inspector, he tells Dutch he'll be back later to pick up Spartan. Ty finds where Wes is staying and he nearly cuts Ty up in his truck. Ty offers to pay double or triple what Wes did for Spartan but he refuses. When Wes says he'll never sell to them him and Ty begin to fight. Jack and Tim pay Wes a visit, they beat him up and threaten him until he tells them where Spartan is and signs a bill of sale. (The Ties That Bind)