The dragons are bosses sometimes. They are powerful beasts, even the small have a surprise attack.

Known dragons (series and movie):

Acid-Spitting Mini Dragons-acid spittin' mini dragon

Midnight Dragon-movie (hidden in garage)

Known dragons (game):

Habanero Dragon-mentioned in Max Squared;a boss
Fire Breathing Mythical Dragon

Close to the Habanarrow Dragon

Foxbra-in game

Firewall Dragon-the firewall in dragon form (Midnight Dragon) ;movie