One more Pokémon I want to mention that's come up a few times between me and my friends back in college:
Kingdra is a Pokémon that I loathed battling for a long time to the point of actively avoiding games where it appears on major NPCs' teams like Pokémon Emerald, but I can at least respect the rivalry it turned into and the running gag in my scrapped writing concepts of me being openly terrified of this thing. As much as I hate that thing and would scream like a child if I saw one in real life, I can maybe still be convinced to like it for the cool Pokémon it admittedly is and for the fact that there's really nothing else like it, especially in Johto where a lot of the new Pokémon are either super late or super weak or some combination of the two.
And then we have the other Water-Type I don't like battling. Kingdra can be extremely aggravating, but it
can be fun to use and, dare I say, even fun to battle against once in a blue moon. I can definitely not say the same for Dondozo. Provided I'm not exactly caught up on my fish biology, I don't exactly know what Dondozo is supposed to be, and as neat as the Tatsugiri synergy is, I was already having trouble with one other bulky Water-Type in the late-game of its own home region and now we're going to supplement this with what I've heard some competitive players call
Physical Blissey at Dondozo's peak of viability. I'm not quite sure I would go that far, but it can certainly feel that way if Commander is active and even if it's not, Dondozo on its own is such a well-optimized physical tank that I'm genuinely surprised Game Freak thought this was a good idea. This thing's got 150 base HP, 115 Defense, a pure Water typing with four resistances and only two 2x weaknesses and no 4x weaknesses, the Unaware Ability that made Quagsire cores such a problem on stall teams in various metagames, and it's not even that passive either with 100 base Attack or the option to leverage that Defense into a Body Press that can further be assisted by the universal physical boosting of Curse, GSC style. Similar to another GSC icon and statistically bulky Pokémon, Snorlax, limiting its access to reliable recovery may have been an intentional game balance decision which is fair if that's true, but Snorlax should still get Slack Off regardless of that fact and that doesn't change the fact that Dondozo's this unreasonably strong defensively with just the 8 PP version of Rest as its best recovery option. It's not very often when we come up with derogatory nicknames for Pokémon, but there's a reason we regularly call this thing "DonBozo" and I've actually banned myself from building SV OU Dondozo teams even as a more casual player who normally prefers more balanced structures over hyper offense.