I don’t think Penguinator is S+ either, but I can very well see him being S. Moku, on the other hand, between being the best closer in the game and also being very good in Inspire front lines (albeit very risky), I think deserves the top spot.
I agree on Arboribratus, but as you said it completely depends on poison. Poison, while having some S tier monsters (one of which can’t be used with Arboribratus because of RAW), is not an S tier strategy. As I said, look past poison and you’ll have something better for everything he tries to do.
Placing him is hard though. I mean you have Atlantyrant and Canishogun in the same tier, and while he’s clearly better than the former, he’s miles away from the latter. I wanna say A, but again: why is Canishogun not S+ exactly? Give him cannibalize and Hundinoid, and he’s a top tier strategy with few flaws and insultingly low team cost.
Talking Oakthulhu, didn’t you just say how easy it is to kill Penguinator before it gets a turn? Wouldn’t the same argument apply to Oakthulhu? I mean Penguinator dies before the 1st turn more often than Oakthulhu I’m guessing, but that’s because he’s simply a more important target, which should go in favor of the monster not against.
Plus remember that Oakthulhu just can deal with camuflage even less so than Penguinator, since the latter can at least kill non steathed monsters as long as they have a kill among them. Another situation where people will let you have an Oakthulhu turn no problem is if they just purified.
Oakthulhu is just too easy to shut down, I can hardly say the same of Bloomluga, Dolphreeze (since everybody runs chrono), Infernicon and so on. And Gyomurai, which you placed a tier lower, not only is harder to shut down in a well build link water, but even shut down he won’t be dead weight.
ps: there is no way in hell that Oakthulhu is better than Scorpiogeist. This isn’t even an argument.