The draconids come in a few forms such as dragons, wyverns, and drakes, etc. Many more exist as well but these are the most common types. Not all are able to spit the flames from inside but are also able to control other things.
These great beasts are in a partnership with the riders as they go about their lives. One is granted the opportunity to work hand in hand with a specific rider with others joining as well. The one close draconid is considered the partner in an everlasting life. The selected partners are usually grown close together within moments as they share life and mind. The draconids are able to send their own thoughts to that one person's head and them back.