I like the item shop owner in the bazzar. He walks around with his head down all skulking and when you walk up to him hes all super happy. he tells you no pressure to buy yet he follows you everywhere. really funny
I'm not all that far into Skyward Sword yet, but so far it's Zelda. I love how she's characterized; she has a really good personality and a bit of a fiesty nature which I rather missed in most other Zelda games.
My favorite character is either Ghirahim because of how unique he is; there are no other characters even remotely like that, Groose simply because of the character development he goes through, or Beedle because he is a quirky goofball by day and a sophisticated and almost evil Brit by night.
I liked all the characters. I loved Rupin because he follows Link around like a creep during the day and at night he's tired and boring. I loved Groose because he's just overall a hilarious guy. I liked Fledge because I thought it was kind of touching how he looks up to Link. I liked Peatrice because I thought her side quest was funny and just made me smile. Overall I liked all the characters and loved how they actually had personality and seemed liked real people. Unlike in OoT where all the characters were two dimensional and had little to no personality.