The English name of the manga Vampire is usually translated as Vampire Hunter D. This is a very famous Japanese manga that has also been adapted into animation and movies.
Well, a good way is to look for inspiration from popular comic names and try to come up with something unique but related. Also, consider using puns or alliteration to make the name catchy.
Think about themes or motifs related to the comic's universe. Maybe it's a steampunk world and a name like 'Copper Gear' would fit. Or draw inspiration from mythologies and give them a name like 'Athena's Shield' if it's a fantasy-themed comic.
To name a comic book well, you need to consider what makes it special. Is it the action, the humor, or the mystery? Base the name on that aspect. Also, check if the name sounds good when you say it out loud. And don't forget to make sure it hasn't been used before by another comic!