So... is there any sort of common theme here, or did this guy just start drawing all the characters from every show/game he ever liked, and only barely managed to stop?
... There isn't even an "all female" or "all anime" connection, as there's JC Denton sitting there in the background.
From what I gather, the original was just the girls in the middle table. After that, I think he started adding all the characters that people generally request from the drawfag threads. So, no. You're not likely to find any theme here other than the tastes of those who frequent those threads.
Also, Clover's face is the best part of this image.
Can't say I'm familiar with his personality, but I imagine having 3 girls staring at him has something to do with... or most likely simply being rather uncomfortable sitting next to a girl with a large phallic crotch spike.
Looking at this today, this could be titled "Pantheon of forgotten Anime", though most of them hold a special place in my heart. Not JC Denton though, he was a good man...
Can you count, suckers? I say, the future is ours... if you can count!
Now, look what we have here before us. We got Pikachu sitting next to Nico Robin . We've got the Jigen daisuke right by some anime girls. Nobody is wasting nobody. That... is a miracle. And miracles is the way things ought to be.
You're standing right now with nine delegates from 100 Anime peoples. And there's over a hundred more. That's 20,000 hardcore members. Forty-thousand, counting affiliates, and twenty-thousand more, not organized, but ready to fight: 60,000 waifu! Now, there ain't but 20,000 loli police in the whole town. can you dig it can you dig it can you dig it!
Aldora
Queen's BladeJigen Daisuke
Lupin IIIHatsune Miku
VocaloidPleinair
Harada Takehito's mascot characterRyougi Shiki
Kara no KyoukaiMerry Nightmare
Yumekui MerryGwendolyn
Odin SphereMaebara Keiichi
Higurashi no Naku Koro niBrioche d'Arquien
Dog DaysRisty
Queen's BladeCecilia Alcott
Infinite StratosEtna
DisgaeaEntei
PokemonDoronjo
YattermanNobue Itou
Ichigo MashimaroSakurai TomokiRibbon and Rage
/tg/ Explained (4chan)Maggie Mui
Read or Die the TVAliasse
Senjou no Valkyria 2Teletha Testarossa
Full Metal Panic!Chrono
Chrono CrusadeSenhime
Sengoku RanceSelvaria Bles
Senjou no Valkyria 1Holo
Spice and WolfPikachu
PokemonMisha Arsellec Lune
Ar Tonelico IWatashi
Jinrui wa Suitai ShimashitaDesco
Makai Senki Disgaea 4Medusa Gorgon
Soul EaterBalalaikaBlack LagoonHyuuga Hinata
NarutoRevy
Black LagoonShirayuki Mizore
Rosario+VampireMii Snowdon (adult)
Pocket Monsters the Movie: Lord of the "UNKNOWN" Tower ENTEIDisc
NeedlessJC Denton
Deus ExWhite Heart
Choujigen Game NeptuneYotsuba
Kyokugen Dasshutsu AdventureManyuu Chifusa
Manyuu HikenchouNico Robin
One PieceFrontier Brain Azami
Pokemon EmeraldHolstaurusPixie
Monster FarmKikuchi Makoto
THE iDOLM@STERBlack Rock Shooter
Black Rock ShooterRyuuguu Rena
Higurashi no Naku Koro niVita
Lyrical Nanoha seriesLaura Bodewig
Infinite Stratosyuzuki yukari
VocaloidMazaki Anzu
yuu-gi-ou duel monstersItou Kaiji
KaijiCaster
Fate/EXTRASuou Pavlichenko
Darker than Black: Gemini of the MeteorAsahina Samidare
Hoshi no SamidareYoshida Yuki
Kore wa Zombie desu ka?Mukai Suzu
Kyoukai Senjou no HorizonIzumi Konata (Suzumiya Haruhi cosplay)
Lucky StarAnemone
Eureka SevenMizunashi Akari
AriaPrincess Peach
Super Mario bros.Sailor Uranus
Bishoujo Senshi Sailor MoonMinase Akiko
KanonMisaka Mikoto
To Aru Majutsu no IndexKuroki Tomoko
Watashi ga Motenai no wa dou Kangaetemo Omaera ga Warui!Tasogare Mimi
Duel MastersTamase Miki
Muv-LuvYomiko Readman
Read or DieMatou Sakura
Fate/Stay NightYuzuriha Inori
Guilty CrownIllyasviel von Einzbern
Fate/Stay NightYellow
PokemonTanamachi Kaoru
AmagamiNoire
Choujigen Game NeptuneNu-13
BlazBlueKousaka Kirino
Ore no Imouto ga Konna ni Kawaii Wake ga NaiDlanor A. Knox
Umineko no Naku Koro niToosaka Rin
Fate/Stay NightPriscilla the CrossbreedDark SoulsStocking
Panty & Stocking with GarterbeltHakuhouin Ayano
Soreyuke! Uchuu Senkan Yamamoto YoukoStrength
Black Rock ShooterKaiki Deishuu
Nisemonogatarikoto
KyousogigaBirdy Cephon Altirra
Tetsuwan Birdy: DecodeLouise Françoise Le Blanc de La Vallière
Zero no TsukaimaTendou Nabiki
Ranma ½Mizuhara Koyomi
Azumanga DaiohOnozuka KomachiTouhouHaruhara Haruko
FLCLQuartz Christie
Miniskirt PiratesKuramitsu Mihoshi
Tenchi Muyou!Accelerator
To Aru Majutsu no IndexShuzen Akua Rosario+Vampire