With the establishment of Giant Rats, I figured there should be more than just anthropomorphic creatures. There should be bipeds, quadrupeds, and even no-peds. With Fleet, I figured there wasn't much point in changing his species, but at the same time I wanted to create more lore in the world of Mythica. Now, as well as the bipedal dragons: also known as Half-Dragons, there are regular quadrupedal dragons as well. Fleet, for example, will be one of these quadrupedal dragons. Full-Dragons do not have opposable thumbs, but have much stronger magic than Half-Dragons, and are usually wiser as well. ...Fleet is the exception to this rule. ...I decided to keep the "missing tail" idea.

In addition, I thought the story could use a legit plant-based race. In the story, Gregory uses a pot and soil to regenerate after being damaged. Kasa-Obake were meant to be semi-plant based, but seemed too nonsensical for this world, plus I'm trying to cut down on the Youkai races. That is where I came up with the idea to add an Trent race. ...And Gregory is part of that race.