Drakons are several millennia older than dragons, and much larger. They look like giant serpents. Most don’t have wings. Most don’t breathe fire (though some do). All are poisonous. All are immensely strong, with scales harder than titanium. Their eyes can paralyze you; not the turn-you-to-stone Medusa-type paralysis, but the oh-my-gods-that-big-snake-is-going-to-eat-me type of paralysis, which is just as bad.