Thanatos is an ornate handgun that is entirely made of Orichalcum, the strongest metal on earth.
Ikuto's gun is a six shot double-action revolver; with gold engraving on it's grip and barrel. On it's frame is a triangular attachment that bears the Roman numeral XIII on both sides. It possess a rapid-fire trigger for quick shooting.
Thanatos is a top-break revolver, meaning it is reloaded by "breaking" the pistol in half, exposing the rear of the cylinder. This automatically ejects all cartridges inserted and allows the user to drop in fresh ones.
A unique feature of the gun is a five meter long retractable wire leash inserted in the grip.
Though Ikuto mainly uses his claws and glove's claws as a weapon, he's an expert master marksman. With the use of his gun Thanatos. This expert marksman's firearm, fires much more rapidly than ordinary pistols, and is capable of unerring accuracy. For instance, Ikuto can shoot several bullets through a single hole. He can also effectively use this as a melee weapon, bashing enemies behind their heads with lightning speed. He is also capable of blocking melee weapons and even bullets with it. Ikuto's mastery of this gun is evident from his ability to fend off both long-range & close-range attacks, as well as to swiftly assassinate his targets. Thanatos can chamber different types of cartridges; ordinary handgun bullets, tranquilizer ones, and most of all: Specialized bullets developed and made by the
Cyan. Examples are:
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Burst Bullet (causes an explosion)
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Freeze Bullet (causes the hit area to freeze)
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Crying Bullet (causes a human target to shed tears uncontrollably)
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Orichalcum Bullet (it can destroy any material on earth)
The retractable lanyard wire attached to the gun gives Ikuto a number of advantages:
An example is throwing the gun on the floor, while clutching the wire with his hands. This makes Ikuto appear to be surrendering. Then at the right moment, he can retrieve it using the wire.
Another use is throwing the gun straight at the opponent to knock him out, then retrieving it again.
If his shooting hand is shaky, Train can wrap the wire around his hand to steady his aim.