<Li> Kristin Fairlie as Tara - Badger's goth juvenile delinquent best friend . She is introduced in Season 2 . At first Tara bullies Mallory and judges her, calling her names based on her appearance (blonde hair and pink clothes) and bubbly personality . The girls eventually become friends . Tara agrees to give horseback riding a try if Mallory will go goth to freak her parents out . After "Do or Die", Tara isn't seen again, although she is mentioned in the episode "The Haunting of Hanley Barn". </Li> <Li> Tatiana Maslany as Katherine "Kit" Bailey - Ty's punk cowgirl ex-girlfriend . Kit enjoys barrel racing on her horse Daisy . Kit's methods for breaking a horse are very different from Amy's . Amy is jealous of Kit at first, but the girls eventually become friends . </Li> <Li> Jeff Roop as Constable Marcus "Mark" Rodriguez - An RCMP officer who initially comes to Heartland because his horse, Venture, developed a fear of water after Const . Rodriguez saved a drowning boy . At first, he seemed to care no more for his horse than as a mode of transportation . Amy saw how he secretly cared deeply for him . On his first visit to the ranch, Lou makes a fool of herself in front of him, and he is later revealed to have a crush on her . They dated briefly after Lou and Scott broke up . Lou eventually caught Constable Rodriguez cheating on her and broke up with him . </Li> <Li> Tom Carey as Wes - Wes is a very shady guy and an enemy of Amy's family . Wes is introduced in "Born to Run". He's a cruel cowboy who was helping some local ranchers round up wild mustangs to DNA test and release . However, it turned out that he had plans to sell them to a meat truck . Mallory discovered the feed lot where the mustangs were being kept, and Amy released them, preventing Wes from trucking them away, effectively saving the mustangs . Wes took revenge one night when Amy, Ty, Lou, and Scott were away at parties (a semi-formal and a college reunion). He started a fire in the barn using a match and plenty of gasoline as an accelerant . Jack was injured while rescuing the horses and lost his memory of the incident, but later remembered and had Wes arrested . In a later season, he steals Spartan in the middle of the night and legally buys him at an auction . Wes's plan was to sell Spartan for more money so that Amy would never see her horse again . After beating Wes up, Tim and Jack rescue Spartan and return him home to Amy . After "The Ties That Bind" Wes isn't seen or mentioned again . </Li>

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