Okay - here's one for you. From what I remember, this is rather accurate - but please don't beat me up if I missed something in one of my dozen readings...
What character (not a minor one, either) had only a single line of dialog? They traveled quite a bit with the main character(s), did quite a bit, but only ever had one line of speech between quotes "". Two short sentences, between the same pair of quotes, like "Sentence one. Sentence two."
For those who think the answer is obvious:
It's NOT Vain. He spoke five sentences, divided into three lines between quotes "".
If you think you know the answer, make sure you put it between Spoiler tags. Here are some hints...
Hint 1:
He's a he.
Hint 2:
Second Chronicles
Hint 3:
Traveled with Covenant and Linden in two books.
Hint 4:
The One Tree and White Gold Wielder
Hint 5:
A Giant
Hint 6:
Not left behind on Starfare's Gem.
That's as far as I'll narrow it down - it should be more than enough to point out the answer.
But here's the one line the character spoke (which is not as revealing of the character's identity as you'd expect):
"Outdistance a Giant? Not while I live!"