The former street artist, who's taken his game up a notch, designing a ballon for the Macy Thanksgiving Day Parade, and also creating the set for last year's MTV Music Awards at the Barclays Center, fills the Brooklyn Museum's lobby with an 18-foot-tall wooden sculpture depicting his signature character, Companion—a sort of skull-headed Mickey Mouse with Xs for eyes—as a pair of of identical figures, with one consoling the other. Also on view are two of his energetically Pop precisionist canvases.