My idea of what Smaug the Charizard - - would look like as Mega Charizard X. In this form, Smaug would be more powerful than before, being able to utlize both Fire-type and Dragon-type moves, but his trainer, my Pokemon persona, will allow him to go into his Mega form only if he feels it's absolutely necessary. That seems reasonable, doesn't it?
You can also see that the scar that Smaug has over his right eye remains where it is whenever he becomes Mega Charizard X, which is a testament to his loyalty to his trainer and his great courage, along with his williness to never give up a battle.
Smaug the Charizard (c) Me
Mega Charizard X (c) Game Freak, Nintendo