"I have only ever wanted to be your equal" - Loki
"I remember a shadow, living in the shade of your greatness" -LokiIn the beginning of the story, Thor and Loki get along well. Loki supports Thor and understands him, and generally is a good brother to him. But as Thor finds out his brother has been lying to him all the time, he is very angry at him. From then on, their relationship gets worse.
Odin is Loki's adoptive father.
Frigga is Loki's adoptive mother.