This list of mythical creatures that begin with this letter and I am constantly gathering information from each continent, and is continually being updated.
Gaasyendietha (Seneca)
Gaasyendietha, according to Seneca mythology, is a giant serpent that dwells in the deep areas of rivers and lakes of Canada, especially Lake Ontario. This serpent could fly on a trail of fire, and it could also spew fire, which has led to it being viewed as analogous to European dragons. It is also known as the 'meteor dragon', in reference to its supposed origin from a meteoroid that had impacted the Earth. It is also capable of crossing the heavens on a trail of fire.
In early accounts, the Iroqouis and Algonquin would speak of an entire race of giant serpent-dragons living in the lake. The Seneca spoke of Gaasyendietha, an enormous hydra snake that could breathe fire and fly like a bird. Stories of Gaasyendietha have been passed down through oral tradition for centuries. There are two main origin legends of the creature. The first is that the beast was born from serpent eggs, and the second is that he came to earth on a meteor.