I love pic related like you wouldn’t believe, way better Water/Fire Volcanion (and not a legendary so we’d get it for reg playthroughs) and a charming simple kind of design we don’t get as much anymore. The skin wearing proto-Sneasel line is a close second.

As for my most disliked betamon, it’d have to be the Arceus from DP. It just looks like a shitty deformed Marshadow, or one of the silhouettes from the pokedex. Even assuming it’s not just the sloppy placeholder it appears to be, its fans are pretty insufferable