Echidna

One of the four dragon lords who serves the Dragon Emperor, Fang. Out of the Four Kings, she is the only female, and is also the most sadistic of the five, taking glee of Fang's more vicious tendencies. Still, she also has a somewhat soft spot for strangers she deems to have potential to be stronger, and she is known to keep her word when making promises.

When she joined Fang's conquest to pay a visit to the goddess Clunea, the act of which would allow her and the others to have one wish, any wish, granted, she and the others were "rewarded" in the form of being forcibly transformed back into her child form (a human woman with vague accents themed after her dragon form) and thrown away to a random part of the world. When Fang reunites with her, he recognizes her through her scent, but she failed to recognize him in his own child form in return. She joins him only due to promising him and his group she'd assist them if they restore her to her true form.