This list of mythical creatures that begin with this letter and I am constantly gathering information from each continent, and is continually being updated.
Imugi (Korean)
The Imugi emerges as a captivating creature within Korean mythology. Frequently characterized as a lesser dragon or proto-dragon, this mythical being bears a striking resemblance to a massive serpent, exuding an aura of benevolence. Amidst the diverse entities that populate Korean mythology, the Imugi distinguishes itself as a mesmerizing and enigmatic serpent-like entity.
An Imugi resembles a giant snake. In many ways they are very similar in appearance to other East Asian dragons such as the Chinese and Japanese dragons. It differs from the Chinese dragon in that it developed a longer beard. Very occasionally a dragon may be depicted as carrying a giant orb known as the yeouiju, the Korean name for the mythical Cintamani, in its claws or its mouth.