General bravery and nobility:
* Valiant: Showing great courage in the face of danger, especially in battle.
* Heroic: Having the qualities of a hero; brave, noble, and admired for courageous acts.
* Gallant: Brave, especially in a chivalrous or courtly manner.
* Magnanimous: Very generous or forgiving, especially towards a rival or someone less powerful.
* Chivalrous: Marked by honor, courtesy, and courage, especially towards women.
More specific connotations:
* Audacious: Bold and daring, showing a willingness to take risks.
* Intrepid: Fearless and courageous.
* Stalwart: Strong, brave, and reliable.
* Upright: Honest and morally good.
* Noble: Having or showing high moral principles and a strong sense of honor.
The best word for you will depend on the specific context.