About Knights of the Round

Red mark is unconfirmed, blue mark is unknown.

Color means cape and pilot arm's.

Rank	Character	Color	Zodiac/Birthstone	KMF
I	Bismarck	White	Capricorn/Turquoise	Galahad
II	?	Red	Taurus/Emerald	?
III	Gino	Green	Sagittarius/Topaz	Tristan
IV	Dorothea	Light blue	Pisces/Aquamarine	?
V	?	Yellow	Aquarius/Garnet	?
VI	Anya	Pink	Scorpio/Tourmaline	Mordred
VII	Suzaku	Blue	Cancer/Ruby	Lancelot
VIII	?	Blue green	Libra/Sapphire	?
IX	Nonette	Purple	Pisces/Amethyst	?
X	Luciano	Orange	Aries/Diamond	Percival
XI	?	Light purple	Virgo/Pearl	?
XII	Monica	Yellow green	Gemini/Peridot	Florence

Zodiac; birthday is
December 23, 1973?
*Early May
November 27, 2001
*Mid March
*Late January
October 26, 2003
July 10, 2000
*Late September
*Late February
April 19, 1987?
*Late August
*Early June (2001 or earlier)

Manfredi was Grand Master of the Knights of St. Michael, and formerly holding the position of Knight of Two. His Knightmare Frame is Sagramore, it is renamed as Vercingétorix when he moved to Euro Britannia.

The remaining colors are red, yellow, gray and brown.

Have six males, six females.

Monica's KMF is in the Oz the Reflection.

Nonette and Dorothea's one is unknown, Nonette roles in Oz the Reflection O2 after video game 'Lost Colors'.

You can see: http://hobbyjapan.co.jp/hobbyjapan/codegeass/season1/extra.html

Which is 18th article.

Valkyrie Squadron has four, but two is only revealed in anime and they are disposable, other two is unknown.
Non-disposable roles have Oz the Reflection only!
Marika is in the first and second Oz. Liliana is only been second one.
Other two characters haven't appeared yet.

Dorothea and Monica are disposable in Lelouch of the Rebellion anime.

Knight of Five, Eight and Eleven will appear in Akito the Exiled Final?

Idea of remaining them:
Knight of Two: Adult woman with glasses.
Knight of Five: Young boy and same age as Anya. Voiced by woman.
Knight of Eight: Cruel woman.
Knight of Eleven: Man with ponytail.

Age order:
Male: I>X>XI>VII>III>V
Female: II>IV>IX>VIII>XII>VI