Initial Conflict:
* Bard: Thorin initially distrusts Bard, accusing him of stealing the Arkenstone and claiming it for himself. This is fueled by the fact that Bard is a human, a species Thorin considers inferior. He refuses to engage with Bard's pleas for the dwarves to help rebuild Dale.
* Elvenking: Thorin's relationship with the Elvenking is characterized by suspicion and resentment. He blames the elves for being responsible for the dwarves' exile from their homeland and believes they are trying to steal the treasure. Thorin refuses to share the treasure with the elves and refuses to acknowledge the Elvenking's right to claim it.
Shifting Dynamics:
* Bard: After the Battle of Five Armies, Thorin's views on Bard soften. He witnesses Bard's courage and leadership during the battle, and he begins to see him as a worthy adversary.
* Elvenking: The Elvenking, despite being initially angered by Thorin's actions, shows compassion for the dwarves and their plight. He is willing to negotiate with Thorin and even helps him during the battle against Smaug.
Resolution:
* Bard: Thorin ultimately concedes to Bard's demands, acknowledging his right to compensation for the damage caused by Smaug. He agrees to share some of the treasure, demonstrating a growing understanding of the needs of others.
* Elvenking: The Elvenking, while still wary, agrees to help the dwarves against the orcs. This alliance demonstrates a fragile peace between the dwarves and elves, foreshadowing a possible future of cooperation.
Ultimately, Thorin's relationships with Bard and the Elvenking teach him valuable lessons about the importance of empathy, compromise, and acknowledging the needs of others. He learns that focusing solely on reclaiming his ancestral treasure is not enough, and that understanding and working with others is crucial for a lasting peace.