All of those attempts should have worked if the megatokyo comics are actually their. How do you know that's the directory for comics? Maybe that page redirects to an ftp site with the files? If you know the filetype of thefiles(assuming html, as i've never read it myself), do
wget -r -A.html http://ctraltdel-online.com/images/comics/
Again, I doubt that what you're looking for is their. The above is only a way to see wether or not their are any html files in their besides those in the db.* dir that has the index you speak of(i tried too :-P). Good luck.. you're right, the man page needs some work.