Raina Petkoff is a character from the play "Arms and the Man," written by George Bernard Shaw. She is a young Bulgarian woman, known for her beauty and idealistic views about love and war. Raina is engaged to Sergeant Bluntschli, a soldier who challenges her romantic notions. Throughout the play, Raina's character evolves as she encounters the realities of war and the complexities of human relationships. Her interactions with Bluntschli and other characters reveal her growing understanding of courage, honesty, and the true nature of heroism.