The Frozen Mammoth is an ancient, powerful creature that was ressurected and turned into a part-organic, part-mechanical weapon by scientists from Kraken Chemical Industry inside the secret Antarctica Research Lab. The basis for its creation was a 50.000 years-old conserved mammoth discovered under the permafrost of Siberia and later transported to the Antarctica. The lower half of the creature was completely replaced with mechanical parts, as it was found useless due to its advanced frozen state, and embedded with powerful plasma emitters. The organic upper body was implanted with a life support system to sustain its new life, five tubes connected to its lower half which carry fluids around, and a small control device in its head to make the beast controllable.
The Frozen Mammoth was found stored within the Research Laboratory during Hiryu's infiltration of the complex. After taking care of the Hockey Soldiers in front of the lab's delivery entrance, the large metal gate opens and the mammoth is set loose to attack Hiryu. After a long, drawn-out battle Hiryu is able to slay the beast, and its corpse is left behind to, once again, freeze in its snowy grave.
The Frozen Mammoth is a powerful war machine that combines the stout strength and power of an animal of its size with the most advanced technological weapons. During the battle, the Mammoth never moves from its standing position, performing several attacks using its limbs, tusks or trunk depending on Hiryu's position. These attacks eventually destroy part of the metal structure around them as well. After receiving some damage, the Mammoth will start generating plasma orbs from its metal half, which will float for a few seconds before shooting towards Hiryu. This attack is constant and difficult to evade effectively, but manageable with good use of the Double Jump and Slide maneuvers.
The creature is extremelly slow and has no mobility or defensive ability, and after enough consecutive hits it will double over in pain for a moment. In spite of that, however, it remains one of the hardest and most drawn-out battles in the game due to its huge amount of HP and its constant volley of homing projectiles which forces one to move around at every moment.
- Trunk Swipe: The Frozen Mammoth swipes with its trunk in front of it.
- Headbutt: The Frozen Mammoth rears back, then does a headbutt upwards. This attack eventually destroys the middle section of the metal structure.
- Stomp: The Frozen Mammoth lunges upwards with its head, standing on its hind legs for a second before coming down with force. Both the head/tusks and front legs can damage Hiryu. This attack eventually destroys the upper section of the metal structure.
- Back Kick: The Mammoth performs a back kick with one its hind legs. Only used if Hiryu is standing behind it.
- Plasma Blast: Several green plasma orbs generate from the Mammoth's mechanical lower half. These orbs float still for a second before shooting themselves at Hiryu's position. The amount generated varies depending on difficulty and is constant once it starts, with a new set of projectiles created right after the previous blasts are gone. Avoiding the rain of attacks is rather difficult, and requires constant movement and use of the Double Jump and Slide techniques to effectively remain undamaged.