I've meet a few creators in a few cons. Nicest ones were Nauck, Mcleod, Dematties.
Worst ones were Tim Sale and Larry Hama.
Sale was so damn arrogant and dismissive. There was a kid in front of me who literally had his mom wait in the long *ss line and then when he was up he just cut in, sucked up to him so much and Sale ate it up. Was dismissive to everyone else. Just a really unlikable guy (whose aren't isn't even good to look at). I sold off the book I had signed.
Hama was even worse. I was nothing but polite to him and he yelled at me to hurry up, like first of all no one was at his table, and then was an hour left at the con, but he wanted to leave early so got mad at me for stopping by later in the day cause he wasn't a priority for me. Very rude and unlikable d*ck.