Names are powerful evokers of character. They're even better when backed up by titles. Try to accumulate as many titles as you can.

Knight of the Realm. Lord Protector. Baron. Professor of Archaeology. Archduke. Head Wizard. He-Who-Shall-be-Worshipped. Emperor-King. Despoiler of Worlds.

Transcript

Obi-Wan: I approach the Sand People.
GM: <roll> They bow and respectfully retreat.
{Obi-Wan helps Adam up}
Obi-Wan: Are you all right?
Adam: Who are you?
Obi-Wan: My name... is not important.
Adam: I can't talk to outsiders.
Obi-Wan: Very well. I am Obi-Wan Kenobi, Jedi Knight and former Member of the Jedi Council.
Adam: "Jedi"?
{beat}
{beat}
Obi-Wan: A force for good. Once.
R2-D2: Jim tells it better.