Cractus is the boss of the Emerald Passage in Wario Land 4. It is a giant undead venus-fly trap-like monster or other carnivorous plant that is planted in a vase. When first encountered Cractus is asleep but awakens the moment Wario smashes the vase and becomes a free-roaming monster that hovers around the area attacking with its thorny hands and dripping evil saliva that transforms Wario into a zombie if he makes contact with it and has sharp fangs and spiked leafs. When defeated Cractus vanishes in a cloud of smoke, leaving behind a large golden crown.