Which monsters have the highest raw ability scores?

[AvatarVecna]

...because what is more charismatic than a giant cloud-like worm?

I'd actually forgotten this thing exists. I recently finished the Chronicles of Thomas Covenant. This would be a decent stand in for the Worm at Worlds End.

It's so silly. It has no Cha skills, no Cha-based save DCs...it only has the Cha to AC (Deflection) thing that's part of being incorporeal. That's literally the only reason Cha is so high, to get Touch AC up high on a Colossal creature. Not even regular AC, just touch AC, since regular AC is **** for its CR.

Great Wyrm Dragon? Cha 33 max.

Fae master of the hunt? Cha 35.

Aphrodite herself? Cha 47.

Some ****ing worm cloud, Cha 42.