Hey, Kalematsuba! C: I'll try my best and put my own personal(but I think they're pretty general) ideas on this~
Some things to avoid:
1) Unless it is of any significance to the story or concept of your comic, using only the protagonist's name is very plain and boring.Sometimes it works but, there are definitely better ways to catch readers attention.
2) try to avoid titles following the "The __ of __" pattern. This might seem random and very specific but here's what I mean: Titles like "THE hero OF light", "THE sages OF darkness" may have been original waaaay back but,over time this formula became associated with cliche stories.
Things to consider:
1) Something that catches me easily is when a title has some kind of contradiction or pun in it.
Ex: "princess charming" instead of "Prince charming"
It's not a must have but it's good to consider (/v)/
2) Coming up with a FITTING title is actually easier than one might think! Assuming you know where your story is going, just think/title about what concept you're trying to convey. You most likely will end up editing it a bit to be more eye-catching but, it's a good place to start!
Ahhh this post was hecka long but I hope it helped ; v ; good luck!♡