You guys had it right. Kali Hawk slayed in that role.
I was disappointed to see her character never returns, she seemed very suitable for Gus. All this talk about him being a "cog" and not having a girlfriend...
I thought they were setting something up, this being the final season and all.
Most hilarious scene, her stealing Shawn's "bit" and introducing Gus as "Denzel Diggs Underwood Morris Chestnut Washington." Good fun.