Cheyenne looks like Robert Smith (The Cure)
I've only seen the trailers thus far, but it seems Cheyenne's look (Sean Penn's character) is inspired by Robert Smith of The Cure (?).
What about his demeanor? Robert Smith is a very sensitive, shy, reserved person, but also romantic/tragic & a bit wry at times. The character seems to come off the same way in the trailers. Of course, Smith is British & not a Nazi hunter :D.
The name "Cheyenne" also immediately reminds me of singer Siouxsie Sioux (of the 80s band Siouxie and the Banshees), who was a part of the same scene as The Cure. Is Cheyenne an aging rock star from an 80s goth band in the film? Or is he more post-punk or glam-rock?