Balin, Dwalin and Thorin Oakenshield
Here we have Ken Stott as Balin on the left and Graham McTavish as Dwalin on the right.
"Dwarf Lords in their own right, Balin and Dwalin are close relatives of Thorin. Beyond this, these brothers are two of his most loyal and trusted friends. An old warrior, Balin has lived through hard times and fought many battles, yet he harbors doubts about the wisdom of the Quest to retake the Lonely Mountain. Dwalin has no such forebodings – his belief in Thorin’s leadership is unshakeable. A powerful and bruising fighter, with a natural tendency to distrust anyone who is not a Dwarf, particularly anyone who might be an Elf, Dwalin is not someone to cross lightly."
And Thorin Oakenshield!
"As a young Dwarf prince, Thorin witnessed the destruction and terror wrought when a great fire-breathing Dragon attacked the Dwarf Kingdom of Erebor. After slaughtering many of Thorin’s kin, the great serpent, Smaug, entered The Lonely Mountain and took possession of its vast store of gold and jewels. No-one came to the aid of the surviving Dwarves, and thus, a once proud and noble race was forced into exile. Through long years of hardship, Thorin grew to be a strong and fearless fighter and revered leader. In his heart a fierce desire grew; a desire to reclaim his homeland and destroy the beast that had brought such misery upon his people. So when fate offers him an unusual ally, he seizes the chance for revenge."
Sources: The One Ring