Someone who doesn't know how to describe herself, is always struggling with debilitating depression, and won't stop hanging onto the hope that happy endings are possible.
When Sunset Shimmer hopped a freight train to Canterlot, a place she left as a child, she didn't expect people to know her name, much less blame her for something she didn't do. Meeting herself didn't make things any less confusing.
With everyone convinced that Sunset Shimmer is Anon-a-Miss, Sunset finally gives up. She's saved by strangers, a couple of whom have familiar faces. (Authorized remake of The Fall of Harmony/Like the Phoenix)