I can't choose outright, so I'll catagorise thusly:

Favourite playable male : Cid Highwind FF7
Favourite playable female : Quistis Trepe FF8
Favourite NPC male : Desh FF3 (Throws himself into a fire and survives! He's so a Pirate!)
Favourite NPC female : Matoya FF1 (Ambiguous, only has three lines, can see into the future but not without her glass. Kinda like Thelma from Scooby Doo)
Favourite monster : Ultros FF6 (Don't feed the octopus kids!)
Favourite talking-sword : Lalicor. O wait, wasn't that Neverwinter nights?