Big Icedus is a sub-boss from Sonic 3's Ice Cap Zone. This Eggman robot resembles a snowman and hovers in the air, using three nodes on its body to create balls of ice from the surrounding terrain that form a protective shield around it. The ice balls continuously rotate around its body and it will attempt to ram the player with them by swooping down upon them. After this attack, it will rise up and scatter its ice balls which will then fall back to the ground, which the player must avoid. In the short time it takes for Big Icedus to generate a new ice shield, it is vulnerable to attack provided the player can reach it before the robot rises too high into the air.