The Thanotar

SCP - 4576 known as the Thanotar was discovered 2019 21 of April in a abandoned mining pit and has a large resemblance to the Hydra originally created in Greek mythology as it possesses many heads with a large appearance of 24 meters in height and 31 meters in length. The Thanotars scales are to thick to be penetrated by bullets, missiles and even nukes can’t damage it, so SCP - 4576 is kept unconscious via constant gassing of Sarin gas the world’s deadliest gas that paralysis the being that breathed it and SCP - 4576 must breath like humans even though it’s not effected by any other gases.
Sarin is usually fatal as it causes permanent nerve paralysis but SCP - 4576 has a chemical reaction which causes the melatonin hormone to be produced which in turn causes SCP - 4576 to stay unconscious for days. SCP - 4576 is completely blind and can produce molten material via eating and regurgitating various materials such as rock, obsidian, iron and titanium usually using it to warm itself or destroy its victims.
SCP - 4576 has the strongest sense of smell in the animal kingdom, SCP - 4576 can smell a rotting corpse from over 100 kilometres away. SCP - 4576 has not breached once since it’s containment on the bottom floor of the SCP foundation site.