Marcy McKean is the CEO of IDS Enterprises.
As CEO, Marcy is Rayne's boss and the reason Rayne got his job in the first place. She sometimes see's his plans as under-developed but so far they has all come to fruition in the end. Despite Rayne's attitude Marcy seems to have a high degree of respect for Rayne, as he has saved/boosted sales and stocks of the company on more than one occasion.
It is known that she has a brother, as in one of Rayne's sexual conquests he slept with his ex-wife.