Ian Hulbert, formerly of Rhythm & Hues, Los Angeles, has joined Toronto animation/broadcast design house Topix as senior animation director. ... Editor Noelle Webb, formerly of Slingshot, has joined New York's Blue Rock Editing Company. ... John Yu, formerly of Sideshow Post, has joined Liquid Light as an Inferno designer. ... Karen Gahl-Mills has left her position as managing director at Chicago's Rhythm Cafe. Her future plans have yet to be determined.