Doctor Robotnik’s Freeze-O-Matic (フリーザーモービル,Furīzā Mōbiru?, lit. "Freezer Mobile"), or just Freeze-O-Matic for short, is a boss from Sonic the Hedgehog 3. The player will encounter this boss vehicle in the end of Icecap Zone Act 2. The Freeze-O-Matic takes eight hits to defeat and takes place in a wide arena.
The Freeze-O-Matic is created and piloted by Dr. Robotnik, and possesses extra armor and refrigeration tubes. Below the Freeze-O-Matic is a radiator tube which has a small platform with spikes on the bottom. Both the radiator tube and platform can blow cold blasts of freezing air that can freeze the player in a block of ice.
After arriving in the battle area, Dr. Robotnik extends down the radiator tube and starts hovering back and forth on the screen. During the battle, the Freeze-O-Matic fires a cold blast in one of three directions: either left or right out of the weapon extended from the bottom, or down from the bottom of the Freeze-O-Matic itself. For a short while after the fight begins, these blasts will occur in a regular pattern from left-center-right-center etc, but after that it comes in a random order. In some cases, Dr. Robotnik will even fire a cold blast downwards twice in succession. If the player gets into the firing line, the playable character will be frozen, similar to the snowblowers in IceCap Zone. If the player has Tails as partner, he can release Sonic from the ice prison regularly before he gets damaged.
After landing six hits on the Freeze-O-Matic, it causes the main radiator tube of the Freeze-O-Matic to break up. Two more hits are required to defeat it, preferably from the front. The only real threat to the player at this point is the icy gas leaking out of the back of the damaged Freeze-O-Matic which still has the same effect as before. After two hits, Robotnik flies away while mobile gets destroyed.