One of the standout participants in the central show of the 2019 Venice Biennale, the Paris-based artist Cameron Jamie makes figures and masks in a panoply of mediums (glazed stoneware, most famously) that are fearsome, inventive, and often discomfitingly familiar, that suggest dark emotions and unsettled states of mind. For his first exhibition at Gladstone’s stately Brussels branch, Jamie is presenting what the enterprise is terming a “rogues’ gallery of ceramic masks.” Some are faced away from the viewer, a signature move that the artists seems to use to invite viewers to venture into the alternate states that he conjures, or simply to embody the hidden ones that he recognizes in us all.