It's like whack-a-mole except the moles make a nice metallic crunch sound when you hit em just right.
Chaos Giants as their name suggest, are giants that serve the Ruinous powers. Like all giants, they're big, smashy, and love booze to drown out the sorrows of being a inbred freak that is now EVEN more of a freak serving Chaos. The Norsca prize these giants for being siege breakers but also keep them on a short leash, lest they get temperamental about being starved between fights and just eats their champion. It's best to always assume a chaos giant worships Khorne unless they're a walking tower of pus and boils, a hedonist who loves to get whipped by daemonettes, or can count higher than three.