Memo to David Goyer: When you finally make your long-awaited Invisible Man movie, you have to top 2000's Hollow Man in the inventive use of spattered blood to make the guy visible. Come on!
Another awesome making-the-invisible-man-visible trick: displaced water in a swimming pool. Rock on.
However, you can feel free to avoid having your invisible guy tell invisible Wonder Woman rape jokes. Really, it's fine.