(( *lego batman voice* Computer, show me info on these guys, on the internet, no smut ))
Based off of what you know of Law, you find several creatures that seem to be what you're looking for. Two distant cultures have spirits with the almost same visual description that have appeared in records independently of any contact between said cultures.
Originating in Yakut folklore, Kydaana reportedly brings a blizzard of fire wherever it appears, its own form made of fog and mist with golden eyes. It is known to decimate villages and eat the minds of geniuses when they win games it challenges them to. Very rarely does it grant mercy to its opponents. Others, however, have reported it performing miracles and healing the sick upon its loss.
In Iran, it is known as a cautionary tale and commonly seen in university libraries. Aman, the Persian counterpart of Kydaana, has a more clearly defined origin. Aman Brant was an infamous serial killer in the Seljuk Empire, a man that desperately sought an imaginary cure to his terminal illness within other people's bodies. That real historical figure has been mythologized into a benign-to-malevolent spirit that haunts hospitals, libraries, schools and mortuaries. It's reportedly been seen performing autopsies, treating patients while posing as a doctor, researching at the library, and helping medical students study.
Additionally, there is a similar spirit to Kydaana in Germany known as Kaltfeuer that is written of in Roman records as being a creature that froze over several villages in a firestorm. There is one singular instance of a creature in Tibet being summoned for an impossible medical cure. Ngawang was said to have a body of glittering fog, golden eyes and sigils containing its body.
Based off of what you know of Drake, you find one or two creatures that seem to be what you're looking for. However, not much is known about the Turkish mythological creature named Akif. Some sources claim it's one of the Cin, a shapeshifter, but one that can only steal the form of its victims. Others claim it can shapeshift into the form of a massive beast unheard of in Turkish folktales or mythos. Some call it Sabriye when it's connected to benign events such as appearing in old battlefield sites or helping amateur reptile enthusiasts identify species.
Occult blogs claim Akif is responsible for whispering in the ears of generals, tyrants and emperors, countless wars and battles waged to feed it and sow havoc and instability. Those conspiracies are largely dismissed by folklorists and anthropologists.
((Now you have an example, I'll let you know that you guys can go searching for info on the internet whenever you want! Law and Drake won't know about it, but it's not information you can find in real life, so I'll be acting as your search engine ;] ))
