For starters, her hair. Due to an incident in Arc 2, Chapter 8, Tron suffered an injury to her scalp. They were able to take the sai off but Tron took some scissors to cut off some of her hair. This was done to separate herself from her Legends counterpart.
Look at this: [link] (she's on the right). She's the same but she's a bit kinder not to mention she's a team player and... she's similar to Pinkie Pie.