My favourite character is Lucien Lachance

I personally don't have a favorite NPC; it's too hard to choose just one! Some of my characters have favorites though.

Lady Saga (wood elf ranger from Valenwood) obviously has a love of other Bosmer. So this includes Parwen of the Skingrad Fighter's Guild. http://i.imgur.com/m14cByI.png?2 Saga and Parwen did some adventuring together, which was fun. And also if Saga is in the Imperial City, she'll buy & sell from Thoronir before going to Jensine or anybody else. There's Maenlorn and Caenlorn in Anvil, Gundalas in Leyawiin ........ you get the picture.

Snaat Rayag (dark elf skooma dealer) has Undena Orethi, the infamous "Tomato Lady" of Skingrad, for a girlfriend, which to me also means she's one of his favorites.

Kahreem of Weet (Redguard thief doing Thieves Guild quests) hasn't really got a favorite. ANY FEMALE he finds attractive is his favorite.

... but like I said, me personally, I have trouble picking a favorite anything in this game. Favorite town? Um... Favorite lair? ermm... So hard to choose just one.