The Dragon is:

• what it says on the tin, really.
• the Stone that must be snatched from the Teacher's hand if the Disciple is to become the Master.
• figurative, in the physical sense.
• literal, in most other senses.  ...Well, maybe not THAT one.
• That Which Lurks upon the Threshold that is Da'ath, the Gateway of the Void, and thus the Great Beast of Knowledge that howls wordlessly at the End of Your World. (See also: Lucifer, Archangel Sataniel, Yog-Sothoth, WhatTheFuckIsThatIDontAiyeeeee.)
• a mysterious subspecies of Chia Pet that requires the eleven-dimensional mathematical model of subatomic physics in order to technically exist.   (Can't see it?  NERD HARDER, BITCHES.)
• BIGGER THAN YOU AND HUNGRY
• the savage emptiness that dwells between the stars.
• a nice person who likes to be chill and friendly and bullshit about things that may seem unimportant...BUT ARE THEY REALLY?  HOW CAN YOU KNOW FOR SURE?
• a fucking retarded fan of things that might be really fucking retarded if only they were not SUPER AWESOME, as I'm sure you agree.
• a shamelessly carnivorous predatory animal.  Seriously.  Deal with it.

The Dragon is usually not:

• a fighting game character from the early 90's who may be channeled by worthy initiates possessing a Playstation, the game discs sanctified by their faith, and a pair of leather pants with a strap between the knees.
• a small, plush superweapon, possibly even a Beanie Baby, renowned for its vast and terrifying powers of cuteness.  (Note: this rule does not apply on alternate Thursdays, or on any other day, except when it does.)
• literal, in the physical sense.
• figurative, in most other senses.  ...Well, maybe not THAT one.
• a delicate, clumsy, socially-awkward Japanese schoolgirl who is hiding a two-foot cock beneath her skirt and who suffers from frequent, spontaneous, and adorably embarrassing erections.
• Riss.
• a small cardboard box.  (See the item just above this one.)
• the owner of any type of genitalia, for any type of use, at any time, anywhere, with anyone.
• a fully-poseable action figure made in Japan.
• a riced-out dinosaur with the reptilian equivalents of gold rims, a triple spoiler, and a quad exhaust.
• GAY FOR BLIND TIGER. (Okay, sometimes platonically gay, but only for a few seconds here and there.) 
• as dumb as it looks.