Loki is Thor's sister, not his brother. The events of Thor go somewhat differently.

Jonelle’s a bastard, right? So she’ll be at the back of the tent when Robert asks Sansa what happened with Joffrey and Arya and Nymeria. She’ll hear Sansa’s soft, quiet whisper- I didn’t see- and Arya’s scream, she’ll hear Cersei’s sentence, her father’s answer. And Jonelle’s as righteous and angry as Jon ever is, and so she doesn’t hesitate to turn around and leave, to use Robb’s parting gift to her- a sharp-edged Valyrian steel imitation dagger- to smash open Ghost’s and Lady’s chains and chase them away. [In which Jon Snow is Jonelle Snow, and goes south with her sisters.]

Sid's hair is a thing. It's her thing, and she's always a girl even when she's a hockey player.

Jaime Lannister drives her sword through Aerys's back to save a kingdom. When her father's armies sack the city and kill those she was sworn to protect, she flees King's Landing, unsure what to do. On her way to Dorne, she runs into Ned Stark who hands her a baby and a purpose, protect the Targaryen heir. A Jaime Lannister redemption story.