I recently saw the first season of Mr. Pickles, despite seeing hatred towards it on YouTube. And, I enjoy it. I'm not a fan of Satan, not a very religious person but I think you should go into the show, expecting lots of animated gore and gross images. Sure, the show doesn't look perfect, but it isn't bad. Yes, the characters aren't that memorable, except from Mr. Pickles, though I enjoy Grandpa also. The humor is most of the time sick or black but I kinda like it. There isn't a story going on also. The best episode so far is Season 1's end. Overall Mr. Pickles isn't show for everybody, though I have fun with it. If you want some blood, black or gross humor, this show may be for you.
