If there’s any one thing I think any creator should understand, it’s that comics is a very, very small pond. And by “very, very, small,” I mean just that. I wouldn’t even call it a pond. Think of it as a remnant of a decent rain. It’s that small.
I say that to say this: you’re going to meet a lot of people in comics, but those that stick with it, you’re going to meet them again and again. It could be years down the road, it could be on another project, but chances are you’re going to meet someone or have the chance to work with someone you hadn’t expected to. Whether or not that surprise is a good or bad thing is totally up to you.
Generally, people grow and change. Someone you hold a grudge against for something they did in the past may no longer be relevant due to that growth and change. As long as it isn’t something egregious, like getting scammed, then you should at least be ready to listen to someone if you’ve been slighted by them in the past and you could now be working with them.
It’s also possible that you may never meet that person again. The reason comics is so small is because it is a challenge making a living at it. Lots of hopefuls walk away, disheartened because of that difficulty. They come in with dreams of hitting the big time, and then leave because they couldn’t get a steady gig anywhere. There’s a very high turnover rate.
As an editor, I get to meet a lot of people. Some people come to me looking for work, others come to me looking for reliable people to work with. Sometimes, people come to me, wanting to work with someone specifically, and it happens to be someone I’ve worked with before. I then tell them my experience with that person.
When it comes to being in a small pond, word of mouth gets around. Only you can be responsible as to whether or not the report given on you is positive or negative.