Tulkas is the Vala of war. He came to Arda because he heard that Melkor was battling the others, and he wished to fight one equal to his strength. He is the god of just war, of glorious battle, of protecting the innocent, of vanquishing the evil. Tulkas rides out to battle with a banner streaming behind him to meet his foe face-to-face in fair combat. His philosophy is simple: Protect the good and destroy the wicked. Glorfindel is named after Tulkas, and he is a good example of a devotee of Tulkas.
Orome is the Vala of hunting. He has been in Arda from the beginning, as soon as there was life. He is the god of wolves in the shadows beyond the firelight, of the hunter who kills the wolf and brings back its pelt, of snares and traps, of patiently waiting for hours for a boar to come in view, of running after a herd of deer and killing the slowest. Orome rides out as well, but he kills fell beasts by leading them into traps as often as by spearing them, and will come up on them unawares whenever he can. His philosophy is simple: The weak must die for the strong, and the herd lives on.
Celegorm is a devotee of Orome.