Li Shenron
Legend
The chef, the dandy and the mastermind.Why do they always delegate dealing with low level PCs to their minions?
The BBEG is like a chef: there are things only they can do, and their time is better spent doing those, that's why they have assistant cooks to deal with generic tasks like slicing onions or adventurers.
The BBEG is a bit of a dandy: simply doesn’t like getting dirty or bloody, or even losing a single HP, if they can have someone else do that in their place.
The BBEG is a mastermind: their power is in their brain, not their arms, they rule by genius or charisma or simply money, but they are actually less effective than their minions in combat.
The last option is actually almost never used in RPGs, thanks to a certain american movies culture that dictates that the main antagonist must always die in the end preferably killed directly by the heroes, so 99% of the adventures assume they need to end in a fight and it has to be challenging.