I'm a cheery fellow,
and a cherry fellow;
I'm a careful thinker
and a joyous dancer.
Who am I?

I wanna say that Bacchus dude, but I don't think that's right....

Well, he mostly fits. I doubt he's much of a thinker, though. 😛

Yeah, that was the part I didn't quite think fit. 😀

*glances at the Chronicles* Looking at them helps me, for some reason. 😛

Um, is it a Dryad of any sort?

(I find that too. 🙂 ) No.

Is it Tumnus?

Indeed it is, Dilly!

Oh, yeah! *does a little happy dance*

I am immortal
And his enemy
I'm not too fond of showing up on scene
Which is why I am only seen twice in the seven books
Who am I?

I'd say Tash, but he shows up twice....

He does? And, yes, it is Tash...*goes to change the last bit of the riddle*
*is changed!*

Oh, sweet! And yeah, twice. Tirian and Co see him at a distance that one morning outside the tower and then he's seen after Tirian and Rishda enter the stable.

I'm a greedy old thing
though that's just what others say.
I like to play king
'cause I'm that at the end of the day.
Who am I?

Rabadash's dad (may he not live forever?)

lol! But no, sorry.

My gut instinct is Shift, but I don't think that's right.... Maybe Miraz?

Your gut is right. 🙂