Violet - A mixture of Emily Browning's looks and Helquist's illustrations. Tall, with a fuller figure on the chest than in Helquist's illustrations. But I imagine her hair as a dark brown, not black as in the illustrations or the light brown in the movie.
Klaus - Helquist's illustrations, only with brown eyes and the same hair color as Violet, and with thicker eyebrows.
Sunny - I imagine Sunny to be blonde, like in the movie. Rosy cheeks, blue eyes.
Bertrand - Tall, pale, moustache, dark hair, blue eyes, thick eyebrows.
Beatrice - Dark wavy hair, brown eyes, pale skin.
Esmé - Tall, dark hair, bangs, long, thick eyelashes, brown eyes, a spot under her left eye, white skin, with big boobs but not too big, long nails, luscious lips always with dark red lipstick.
for a clearer picture, see this:
ckt.deviantart.com/art/Unbelievably-In-142098073Jerome - Tall, light brown hair slick back with a rebel curl, hazel eyes, a beautiful, clean-shaven face, thick eyebrows.
Hector - Brown skinned * I think Hector is of mexican descent, possibly* dark hair, brown eyes, a tad on the muscular side.
Olaf - Jim Carrey, quite simply. lol
Aunt Josephine - Meryl Streep!
Quigley - Black hair *messy*, green eyes, thick eyebrows, handsome, but in a more rebellious way than Duncan, more physically apt than Duncan too *translation = hotter - lol *
Isadora - short black hair, green eyes, pale skin, thin, really pretty.
Duncan - black hair *a bit shorter than Quigley's and less messy*, green eyes, thick eyebrows, handsome, too, but in a more ladies man way than Quigley.
Carmelita - Red-hair, curls, brown eyes, lanky.
Kit Snicket - Blonde, really pretty, green eyes, round face, big boobs *due to pregnancy*
Jacques Snicket - Unibrow, hazel eyes, thin moustache and goatee, grayish blonde hair, tall and fit.
Fiona - Just a tad taller than Violet, green eyes, black hair.
Phil - Grey hair, balding, benevolent look.
Colette - Bangs, light brown curls, green eyes, thin and lanky, but gracious.
Kevin - Messy greying hair, blue eyes, taller than Colette.
Madame Lulu - Ash blonde, brown eyes, prettier than the Helquist illustrations.