[Kaderin Triste]

Ah, I didn't know K9 (because I just haven't had access to a lot of Doctor Who, so my main knowledge of that is simpler stuff) and the Gravity Falls one. I've heard of Gravity Falls, but never seen it.

The rest, I'm super aware of. Though Smaug I really only would have 100% known as Smaug because you had said what it was previously, otherwise, it just looks like a general dragon, which could be from anything...
And I haven't really gotten much into Star Wars, but the Millennium Falcon is just so iconic that most people could tell you what it's from probably.