Best: I think Madoka's mom is amazing. You rarely see a mother and daughter bond in anime/video games but despite her mother being a workaholic she clearly cares deeply about Madoka, and they have a strong, healthy relationship. Another parent I thought of is Fujimoto, Rin and Yukio's dad from Ao No Exorcist!

Worst: I WAS LIKE "HOW HAS NOBODY SAID GENDO IKARI YET" and then I realized that he's the example. Duh. But seriously, Gendo Ikari. I know it's unoriginal I'm rewatching Evangelion right now and I honestly cannot think of a fictional parent worse than he is. (I'm gonna have to second/third/fourth/whatever the dad who used his daughter in human experimentation from FMA, too.)