I think the people who are very interested in character development typically either enjoy it tremendously or are (intentionally or unintentionally) using their art as a self-therapy. Both valid ways of doing art, as well as not being interested in character development or therapy art.
Sometimes the character development is and can be small and it's OK. People tend to call just finding new things about the character also a character development. Put them in new situations and see how they react and act.
Some characters are iconic for what they are and you don't even expect deep character development from them. Terminator is Terminator and you know with 100% certainty what to expect when you deal with Terminator - sure, he can be programmed differently for different needs but it's not exactly character development on its own if you ask me. Dracula is Dracula, Rambo is Rambo, Predator is Predator and Morticia Adams is Morticia Adams.
It's nothing unheard of that trying to develop the character because you should makes the character unrecognizable or OOC regarding what has been going on until now within the story.
In Nemesis the Warlock comic, the protagonist Nemesis is pictured as a good willed man, who does his best to resist racist humans and save other alien species. He doesn't really care about humans per se but is fine with a human being his right hand helper. His intentions are to save alien species from humans and bring peace to the universe. He's a liked friend and a loved husband and trying his best as a father.
This is about the half way of the series until creator(s) decide to develop Nemesis more. Turns out that Nemesis is actually just a bored demi-God who loves to play hide and seek with his human enemy. That he doesn't care about anyone or anything else but his own joy and boredom. He isn't interested in saving anyone and he literally manipulates his human friend, too, for his own benefit. This is explained as "Well, I'm just a chaos's being, deal with it, I never said I was good".
See what I mean? Go to far, try to force the development (and explain everything) and you can, without wanting it, break your character or the story - or both! If you make a character go a complete opposite of themselves, there has to be a reason for it. Not like in Nemesis "Well, I'm just like this". No, dude, you were literally the exact opposite for years and still just a second ago. What happened? Well, nothing, creator(s) just decided to add a shock value and develop the character because?????
You want your character to live the life you'd want? Wonderful, that's enough! That's how Sailor Moon was born and is all about. The creator was lonely, so she drew a comic of girls being friends, that kind of friends she wished she'd also have.
It's a valid reason to make a comic. Or anything! Nothing needs to be deep but it can be if wanted.