If that's how you'd prefer it that's fine with me, but the more details you give me the more convincing I'll be in the portrayal of your spirit. Because remember, if you don't give me details that means I give details which is always chancy for you!
For future reference (and because I like things to be smooth, lol):
Combat: Hank Rearden in his steel mill work clothes, Ragnar Daaneskold
Detection: Dagny Taggart in a Beech C-45H, Equality 7-x
Health: Man John Galt, D'anconia, Midas Mulligan
Illusion: Hugh Akston, Richard Halley
Manipulation: Golden Atlas, Howard Roark
I'm pretty sure all of these have wikipedia entries. If it's not clear why which one goes where, lemme know. I put a few in each category since their power loadouts will be unique.