She first appeared in Season 5 as Rarity's new Store Manager at the Canterlot Boutique during the episode Sassy was taking all the Credit while having Rarity make the same dress over and over not giving Rarity any time to make what she wanted to make and forcing Rarity to close the Boutique pointing out to Sassy that making the samething over and over again would end up making it lose it's touch convincing Sassy that she should be more open to other things then selling one type of dress.

MLP Sassy Saddles Belongs to Hasbro.