That was actually very good, Gyps!
I'm guessing Aravis?

Thanks, Ariel! 😀
And yes, you are right! 😀

Hurrah!

Let's see....

They woke me from a nap -
and honey-sweet it was -
but they had good reason
for I met the new king.

All I can think of is Father Christmas right now?

Interesting answer, but sorry, no.

That bear in Prince Caspian?

Very good! 😀

I'm a trixter and a brat
I hate rodents plus that rat
We just need a pussy cat
One gulp and that is that
But I change after a while
Until then I couldn't smile
It really helped on Dragon Isle
I escaped the good king's triel

I hope you can guess this one. It's quite obvious.

Eustace?

Yep. 😀

Bravo, Gypsevedius! (I love your name)

Thanks, Benisse. 😀 (I like yours too. :D)

Oh! It's my turn to come up with an answer. Oops. 😛

Uhh, let's see...

Stand straight,
Always cold,
Shine bright,
Kind of old,
Never in the wrong or right.
What am I?

Ramandu?

Nope, interesting guess though.

Hint: It's a what, not a who. I couldn't think of any more whos.