That's what I'm here for....
Thank you, Gatordad, for asking this poignant question.
I voted for Grimace.
Who used to be the Evil Grimace.
And was pretty much a B.A.
On the link posted by DaveInTN, you can see an early McDonalds commercial in which Jodie Foster and the Evil Grimace co-star with Ronald.
In the first cycle of McDonaldland commercials beginning in 1971, Grimace was the "Evil Grimace", with two pairs of arms with which to steal milkshakes. After that first campaign, the character was revised to be one of the "good guys", and his number of arms was reduced to two.
I remember the first time I saw the new Grimace.
The poor guy. In addition to removing a set of his arms, I think Ronald gave him a lobotomy, too.
Those were the good old days.
TCD