The modern Benoni plays many of the same moves as the Sicilian dragon and is very sharp in its own rite......however, the Benoni is *not* the dragon - because the structure is fundamentally different. Still, you might want to look into it.
I'm not really recommending any specific line for either color here - you have to explore that yourself - I'm just showing the bare basics of what you're going to do as black: Nf6, c5, e6, trade on d5 (essentially non negotiable) and then you have a lot of choices, but the main idea is to finachetto kingside, play d6, a6-b5, and expand on the queenside. It's a very tactical, dangerous position that I rather despise with the white pieces, but, from a black perspective, I could see a Siclian dragon player liking the feel of the mainline Benoni.
How does black play the sicillian dragon against the queen pawn opening? Or is that just a bad idea to begin with? I am particulalry fond of the dragon and I like to play it everytime I play black but the queen pawn opening throughs me off my game.