[iRandom]

Duncan should have a stillsuit according to the book. He was sent ahead of the others to Arrakis with a specific mission. The 80s movie downplayed Duncan's part.

A young, non-superhero-esque Paul also makes sense. He was 15 at the beginning. He is a nobleman's son and was a trained fighter per his station. But I'm not sure that his physique was ever described. The training from his mother is all about maximizing muscle control rather than maximizing muscle mass. I always got the sense that Paul would have a body more be more like a martial arts master rather than an MMA fighter.

From what I've read the first movie is only part of the first book. This would explain the omission of some characters that don't become important or even appear in-person until later.