HENRY
"May he who illuminated this...illuminate me..."
Watching this the other day with a friend who's never seen the movies, I realized what Henry said, and hence finally figured out why he says this at the end,
"Me?...Illumination." Pretty cool.
I think if you include Marcus and Henry, you'd have to include Marion, Elsa, and Willie. Henry was more of a tag along, like Willie. he helped a bit, but wasn't on the journey to help Indy necessarily, unlike the others. Anyway...
That being said, I like Marion the best as a sidekick.