CBR just did a “Comic Characters - Noir” artists’ challenge and it’s amazing. I love comics and I love Noir, so it is like some kind of nerdy heaven.

These are my favourites but there are more here.

Cloak & Dagger - Phillip Sevy

Hawkman - John Trumbull

Brainiac - Nick Perks

Tony Fleecs has done old school pulpy book covers for comic characters.

Love these.