11 eyes debuts
B Gata H Kei debuts
GA ~Geijutsuka Art Design Class~ debuts
Nyan Koi! debuts
Sora No Oto debuts
The Tatami Galaxy debuts
Sora No Oto becomes the 550th series to compete

Kana Hanazawa reaches her 10th unique entrant (Mayu Miyano)

Animal Detectives Kiruminzoo debuts
Hanamaru Kindergarten debuts
Mayoi Neko Overrun! debuts
When The Seagulls Cry debuts
Working! debuts
Clannad makes its 55th match appearance (Ryou Fujibayashi)

Eri Kitamura reaches her 10th unique entrant (Yachiyo Todoroki)

Shana makes her 15th match appearance

Angel Beats! debuts
Ladies Versus Butlers! debuts
Omamori Himari debuts
Shakugan No Shana makes its 20th round 1 appearance (Kazumi Yoshida)

Iori Nomizu debuts

Ghostory debuts
Ichiban Ushiro No Daimaou debuts
Seitokai No Ichizon debuts
Sora No Otoshimono debuts

Yuka Saito debuts
Ayako Kawasumi reaches her 51st unique entrant (Tomomi Saikyou)

Nanoha Takamachi returns for her 5th tournament appearance
Nanoha Takamachi makes her 20th match appearance

Kiss X Sis debuts
Magical Girl Lyrical Nanoha makes its 101st match appearance (Nanoha Takamachi)
To Love Ru makes its 25th match appearance (Haruna Sairenji)

Yuko Tatsumi debuts
Satomi Arai reaches her 5th unique entrant (Suzuki)

Taisho Baseball Girls debuts

Yui Horie reaches her 30th unique entrant (Namiko Nozaki)
Yukari Tamura reaches her 25th unique entrant (Bernkastel)

Houtou Shigen becomes the 1900th character to compete [1][2]

Katanagatari debuts

Baka To Test To Shoukanjuu debuts
Ookamikakushi debuts
Negima makes its 80th match appearance (Nodoka Miyazaki)

Shion Hirota debuts

Tamaki Kousaka returns for her 5th tournament appearance
Nagi Sanzenin makes her 15th match appearance

Hakuouki debuts
Hayate The Combat Butler makes its 80th match appearance (Nagi Sanzenin)

Saki Fujita reaches her 5th unique entrant (Mana Kuzumi)

Ayumu Nishizawa makes her 10th match appearance

Kaichou Wa Maid-sama!

Mai Fuchigami debuts
Mariko Honda debuts
Mai Fuchigami becomes the 500th voice actor to compete

Kanamemo debuts
K-On! makes its 10th round 1 appearance (Sawako Yamanaka)

Hitomi Harada debuts
Yui Makino reaches her 5th unique entrant (Yusa)

Isuzu Tsumuhana becomes the 1950th character to compete [2]
Angol Moa returns for her 7th tournament appearance

Koihime Musou makes its 10th round 1 appearance
Sgt. Frog makes its 15th round 1 appearance

Erika Nakamura debuts
Emiri Katou reaches her 5th unique entrant

Hayate The Combat Butler makes its 40th round 1 appearance (Sakuya Aizawa)
Saki makes its 30th round 1 appearance (Koromo Amae)
Saki makes its 60th match appearance (Koromo Amae)
Saki competes for the 5th consecutive match day [3]

None [3]

Dullalala! debuts
Princess Lover! debuts
Clannad makes its 25th round 1 appearance (Kyou Fujibayashi)

Kana Ueda reaches her 18th unique entrant (Mii Konori)

Satoko Houjou returns for her 5th tournament appearance

Let's Become Cool First Graders! debuts

Mion Sonozaki returns for her 5th tournament appearance

Needless debuts
Needless becomes the 575th series to compete

Mina debuts

Jewelpet debuts
Saki competes for the 10th consecutive match day

Asuka Okame debuts
Natsumi Takamori debuts
Yukari Tamura reaches her 27th unique entrant (Yamada)

The Melancholy Of Haruhi Suzumiya makes its 20th round 1 appearance
Saki completes its 11 day match streak

Mana Hirata debuts
Aoi Yuuki reaches her 5th unique entrant (Korone)

Heartcatch Pretty Cure! debuts

Nana Mizuki reaches her 18th unique entrant (Tsubomi Hanasaki)
Kana Hanazawa reaches her 5th new entrant of 2010 (Suou Pavlichenko)
Eri Kitamura reaches her 5th new entrant of 2010 (Yui)

Kampfer debuts
The Sacred Blacksmith debuts

Arakawa Under The Bridge debuts
The Qwaser Of Stigmata debuts
Shugo Chara! makes its 15th round one appearance (Rima Mashiro)

Maaya Sakamoto reaches her 19th unique entrant (Nino)

Yuki Horinaka debuts
Ryou Hirohashi reaches her 15th unique entrant (Aoi Yamada)

Kimi Ni Todoke debuts

Hisako Kanemoto debuts
Fumie Mizusawa debuts
Mamiko Noto reaches her 25th unique entrant (Sawako Kuronuma)

Hitagi Senjougahara becomes the 2000th character to compete [2]
Rika Furude returns for her 5th tournament appearance
Mahoro Andou competes for the first time since 2002

Dance In The Vampire Bund debuts
When They Cry makes its 65th match appearance (Rika Furude)

Chika Anzai debuts
Ayumi Fujimura reaches her 10th unique entrant (Cecily Campbell)
Kana Hanazawa reaches her 15th unique entrant (Sakura Hanazono)
Chiwa Saito reaches her 22nd unique entrant (Hitagi Senjougahara)

Misuzu Togashi debuts
Misuzu Togashi becomes the 512th voice actor to compete
Mako reaches her 5th unique entrant (Koume)
Aya Hirano reaches her 19th unique entrant (Ekaterina Kurae)
Kaori Nazuka reaches her 22nd unique entrant (Shizuku Sangou)

Sora No Manimani debuts
The Melancholy Of Haruhi Suzumiya makes its 40th match appearance (Haruhi Suzumiya)

Shion Sonozaki returns for her 5th tournament appearance

Negima makes its 60th round 1 appearance (Konoka Konoe)
To Love Ru makes its 15th round 1 appearance (Mikan Yuuki)
When They Cry makes its 30th round 1 appearance (Shion Sonozaki)

Fate Testarossa returns for her 5th tournament appearance

Fate/Stay Night makes its 10th round 1 appearance (Saber)
Magical Girl Lyrical Nanoha makes its 55th round 1 appearance (Fate Testarossa)
Hidamari Sketch makes its 40th match appearance

Yui Horie reaches her 5th new entry of 2010 (Akane Mishima)

Manaka Komaki returns for her 5th tournament appearance

Hidamari Sketch makes its 25th round 1 appearance (Miyako)

Mai Nakahara reaches her 25th unique entrant (Hatsune Otonashi)
Miyuki Sawashiro reaches her 19th unique entrant (Suruga Kanbaru)

Saki makes its 40th round 1 appearance (Touka Ryuumonbuchi)
Saki makes its 70th match appearance (Touka Ryuumonbuchi)

Chii Matsuura debuts
Kanae Itou reaches her 5th unique entrant (Ruiko Saten)

Rena Ryuuguu returns for her 5th tournament appearance
Rena Ryuuguu makes her 15th match appearance

Utawarerumono makes its 25th round 1 appearance

Senkou No Night Raid debuts

Yoshiko Ikuta debuts
Tomomi Isomura debuts
Shizuka Itou reaches her 23rd unique entrant (Fujiko Etou)
Rie Kugimiya reaches her 35th unique entrant (Shannon)

K-On! makes its 30th match appearance
Shugo Chara! makes its 25th match appearance
K-On! completes its 4 day match streak

Houko Kuwashima reaches her 33rd unique entrant (Itsuki Myoudouin)
Megumi Toyoguchi reaches her 19th unique entrant (Aria)
Emiri Katou reaches her 5th new entry of 2010 (Shiori Sekine)

Kobato debuts

Marina Inoue reaches her 10th unique entrant (Natsuru Senou)
Haruka Tomatsu reaches her 15th unique entrant (Hime Makita)

Ai Haibara returns for her 7th tournament appearance

Angel Beats! makes its 10th round 1 appearance

Fuko Saito debuts
Yuko Kaida reaches her 5th unique entrant (Tomoe Tsukubae)

Yuno makes her 4th round 2 appearance
Nanoha Takamachi makes her 5th round 2 appearance
Yuno makes her 10th match appearance
Nanoha Takamachi makes her 21st match appearance

GA ~Geijutsuka Art Design Class makes its round 2 debut
Ghostory makes its round 2 debut
Working! makes its round 2 debut
Hidamari Sketch makes its 45th match appearance (Yuno)
Magical Girl Lyrical Nanoha makes its 105th match appearance (Nanoha Takamachi)

Ai Tokunaga makes her first round 2 appearance since 2003 (as Viola)

Isumi Saginomiya makes her 4th round 2 appearance
Isumi Saginomiya makes her 12th match appearance

Omamori Himari makes its round 2 debut
Sora No Otoshimono makes its round 2 debut
K-On! makes its 5th round 2 appearance (Yui Hirasawa)
Ghostory makes its 10th match appearance (Nadeko Sengoku)
Hayate The Combat Butler makes its 90th match appearance (Isumi Saginomiya)
Sora No Otoshimono makes its 5th match appearance (Nymph)

Iori Nomizu makes her round 2 debut (Nymph)

Shana makes her 4th round 2 appearance
Nagi Sanzenin makes her 4th round 2 appearance
Shana makes her 16th match appearance
Nagi Sanzenin makes her 16th match appearance

Baka To Test To Shoukanjuu makes its round 2 debut

Chiaki Omigawa makes her round 2 debut (Nazuna)

Kyou Fujibayashi makes her 3rd round 2 appearance

Clannad makes its 17th round 2 appearance (Kyou Fujibayashi)

Hitomi Harada makes her round 2 debut (Mizuki Himeji)

Aruru makes her 3rd round 2 appearance
Hiro makes her 3rd round 2 appearance
Aruru makes her 10th match appearance

Hanamaru Kindergarten makes its round 2 debut
Hayate The Combat Butler makes its 24th round 2 appearance (Maria)
Saki makes its 15th round 2 appearance (Hisa Takei)
Utawarerumono makes its 11th round 2 appearance (Aruru)
Saki makes its 75th match appearance (Hisa Takei)
Utawarerumono makes its 45th match appearance (Aruru)

Kanamemo makes its round 2 debut
Seitokai No Ichizon makes its round 2 debut
Shakugan No Shana makes its 40th match appearance (Wilhelmina Carmel)

Mariko Honda makes her round 2 debut (Kurimu Sakurano)

Yuki Nagato makes her 3rd round 2 appearance
Yuki Nagato makes her 10th match appearance

Angel Beats! makes its round 2 debut
The Sacred Blacksmith makes its round 2 debut
The Melancholy Of Haruhi Suzumiya makes its 10th round 2 appearance (Yuki Nagato)

Yuki Horinaka makes her round 2 debut (Mafuyu Shiina)

Heartcatch Pretty Cure! makes its round 2 debut
Sora No Manimani makes its round 2 debut
Working! makes its 10th match appearance (Aoi Yamada)

Fumie Mizusawa makes her round 2 debut (Erika Kurumi)

Evangeline A.K. McDowell makes her 4th round 2 appearance

Negima makes its 19th round 2 appearance (Evangeline A.K. McDowell)
Kanamemo makes its 5th match appearance (Kana Nakamachi)
Negima makes its 85th match appearance (Evangeline A.K. McDowell)
The Sacred Blacksmith makes its 5th match appearance (Cecily Campbell)

Ayumi Fujimura makes her round 2 debut (Cecily Campbell)
Mana Hirata makes her round 2 debut (Hazuki Shimada)

Miyako makes her 3rd round 2 appearance
Miyako makes her 10th match appearance

Tomomi Isomura makes her round 2 debut (Shouko Kirishima)
Minako Kotobuki makes her round 2 debut (Tsumugi Kotobuki)
Kei Shindou makes her round 2 debut (Shizuku)

Amu Hinamori makes her 3rd round 2 appearance

Detective Conan makes its round 2 debut
Mayoi Neko Overrun! makes its round 2 debut
Saki makes its 20th round 2 appearance (Momoko Touyoko)
K-On! makes its 35th match appearance (Azusa Nakano)
Saki makes its 80th match appearance (Momoko Touyoko)

Megumi Hayashibara makes her first round 2 appearance since 2002 (as Rei Ayanami, Faye Valentine)

Alisa Bannings makes her 3rd round 2 appearance
Fate Testarossa makes her 4th round 2 appearance
Mikan Yuuki makes her 3rd round 2 appearance
Fate Testarossa makes her 14th match appearance

Kobato makes its round 2 debut
Hidamari Sketch makes its 15th round 2 appearance (Natsume)
K-On! makes its 10th round 2 appearance (Mio Akiyama)
Magical Girl Lyrical Nanoha makes its 29th round 2 appearance (Fate Testarossa)

Youko Hikasa makes her round 2 debut (Mio Akiyama)

As yet not finalised

[1]: Due to the discovery of an error in the main database (Haruhi Suzumiya @ Lucky Star incorrectly having an entry independent to Haruhi Suzumiya @ The Melancholy Of Haruhi Suzumiya) during the C78 break, the poster incorrectly claims Ikaros as the 1900th competing character. This error also means that the binary ID codes of almost all characters in groups A and B were displayed incorrectly in round 1.

[2]: In a rigorous check for errors in the database post-tournament, one final redundant entry was discovered, changing all of the landmark characters. Those listed on this page are correct, but are incorrect on the respective daily posters. This also means that the binary ID code issue permeated almost the entire tournament (the earliest error was in 2005 group C, so of the 2010 competitors only Nanoha Takamachi and the handful of characters appearing before her were unaffected).

[3]: Due to sheer muppetry, the posters incorrectly claim this happened on the 20th.