Darn right, they are! Well you’ll see a different answer if you’re a member of the AR Alternative Read group.
Character names are important. Some names just don’t go with some virtues. For instance, how about:
Joe–Can you really see Joe as a hulking, heman, full of sensuality, sex appeal, muscles that make you want him to hold you tight? Do you see Joe as that very wise detective who catches the villian and the girl? Can you see Joe as that Nemesis of the World’s Worst Villian who comes from outerspace, innerspace, or another dimension?
John is better, but that reminds me of the Disciple in the Bible, so no, he won’t be a wild one. I think I can of like them wild.
What about Susie? Is she a good mate for the World’s Best Hero? For that hulking piece of dynamite? Nah, she’d wilt in the presence of so much power. Hey, that might work in a story…
As for titles, I’d say they were important. Who wants to read a book by the name of This is I, My Operation, Hello World…You get the picture.