Updated with Ukyo by Intence_mc

Okay, now I recognize most of them.
These sprites only appear in the mode select and the continue screen in the Arcade version.
However, the only time I remember where you could "fight" D'Arby was in Super Story Mode in the PSX version, and that doesn't even count as a minigame fighter...

Well, you almost got it right:
-The preview pic of Normal Dio shows Final Dio.
-Final Dio did appeared in the original game. I'm still not 100% sure if Warusaki's Final Dio is accurate though, since Final Dio is an unplayable boss character.
-The World and Star Platinum should actually be in the same section
-Hol Funtimes and American Idiot should switch places
-Gray Fly by Haruwo is actually based on the manga version and not the game version. In the game, you only fight his Stand "Tower of Gray"
-I still have no idea where you got that preview pic for Daniel J. D'Arby from...

In Xuan Dou Zhi Wang / King of Combat it says Fighter Conversion Ratio:100% even though nobody is converted.

and about that, in AF section the pic in Gohan Z2 is the one from Cybaster & Balthazar WIP (Adult Gohan) instead the version I made (SSJ Gohan)

http://mugenfreeforall.com/index.php?/topic/38-jojos-bizzare-adventure/
Appearantly, someone did N'Dour.
However, he feels like an WIP version of the minigame N'Dour at the moment, since he doesn't move and one hit kills him...no stand usage ATM.
Also has Montana's Midler, Bad Darkness' Khan and Rubber Soul & y.y's Hol Horse/Hol & Boingo.
There are also two Rubber Souls and custom versions Dio Brando based on his appearance in Part 1: Phantom Blood, Midler during Alessi's childification, Gold Expirience Requiem from Part 5: Vento Aureo, Ringo Roadagain from Part 7: Steel Ball Run and more.
Also, might as well could be a good idea to somehow show that most of these in the "Special Edited Section" (save for Hol Funtimes, Chibi Diavolo and A. Idiot) are recreation from JJBA characters of other timelines.
EDIT1: Appearanlty, N'Dour actually HAS attacks. However, only the AI can use them for some reasons...
EDIT2: Nevermind, the player can use them as well as long as you put in the correct command.

Nunor, Andy by Tellie is 2k2 gameplay with sprites 2k2. Look: http://mugen.weboy.org/images/the-king-of-fighters/characters/andy-bogard_by_tellie.jpg

Cafe Skydrive is offline.

Dragon Ball
-Nunor, I released a revamped and serious version of Gohan (renamed as SSJ Gohan), to be changed in that section (Gohan Z2 is more like a AF release, should be in that section)
-Cybaster and Balthazar are making 2 WIPs of their Z2 chars: Freeza and Gohan (Adult/Mystic version), to be added with the yellow LED here

April's Fools
-I made 2 AF chars: Loud Demon in 2010 (also appears in SFA Edited Section) and Gohan Z2 in 2013 (credited as Cybalthasara-kun, actually in DB section), both chars are online, to be added here

Nunor, add theses are offline on wiki:

Whip2000 by Shingin: http://web.archive.org/web/20020721045600/http://www.shingin.tk/
Whip 2000 by Ryokucha: http://www.4shared.com/rar/aRBIYuRl/Whip2k.htm
Whip 2k2UM by Ahuron: http://www.4shared.com/rar/J3xzphy7/whip_ahuron_.html
Andy 2002 by Tellie: AD REFERRALS ARE NOT ALLOWED/forums/downloads.php?do=file&id=1112

I think they are Hi-Res.
Four stages was made by Dissidia:  http://dissidia.mugen-infantry.net/home (stage->Mugen 1.0->Wonderful World)
You used wrong Liu Kang sprite for the section preview (from MKII)
Scorpion and Sub-Zero by RACE 45 is offline.
Flamekyo has made special edited version of Ermac:  http://mugenguild.com/forum/topics/mk-ermac-102744.0.html
xxxXx released new version of Rocky:  http://mugenguild.com/forum/topics/rocky-kof-2000-update-153361.0.html
Scorpion and Sub-Zero by RACE 45 is offline.
Flamekyo has made special edited version of Ermac:  http://mugenguild.com/forum/topics/mk-ermac-102744.0.html
Sephiroth shows wrong image.
BTW, Nunor, I think you should make Other Digitized Games section for characters from Kasumi Ninja, Ultra Vortex, The Twin Goddesses and other digitized games.

BTW, Nunor, I think you should make Other Digitized Games section for characters from Kasumi Ninja, Ultra Vortex, The Twin Goddesses and other digitized games.

http://mugenfreeforall.com/index.php?/topic/38-jojos-bizzare-adventure/
Appearantly, someone did N'Dour.
However, he feels like an WIP version of the minigame N'Dour at the moment, since he doesn't move and one hit kills him...no stand usage ATM.
Also has Montana's Midler, Bad Darkness' Khan and Rubber Soul & y.y's Hol Horse/Hol & Boingo.
There are also two Rubber Souls and custom versions Dio Brando based on his appearance in Part 1: Phantom Blood, Midler during Alessi's childification, Gold Expirience Requiem from Part 5: Vento Aureo, Ringo Roadagain from Part 7: Steel Ball Run and more.
EDIT1: Appearanlty, N'Dour actually HAS attacks. However, only the AI can use them for some reasons...
EDIT2: Nevermind, the player can use them as well as long as you put in the correct command.

Also, might as well could be a good idea to somehow show that most of these in the "Special Edited Section" (save for Hol Funtimes, Chibi Diavolo and A. Idiot) are recreation from JJBA characters of other timelines.

You're welcome also, some little things about SCWU section:
-For Game Info, this is the official website
-Like the half of images don't shown (I don't know if it's my connection or it's something about the upload, someone else can check this please)
-It's Yinan, not Yunan
-Some previews are in wrong places, these ones are shown under these chars:
   -Z-Mega on Yo
   -Zenka on Yinan
   -Ziro on Z-Mega
   -Yo on Zenka
   -Yinan on Ziro
-I got Rario, Sin's sff and some of Alex sprites ripped. I can make you a stand gif of those 3 for the main preview (below game title) if you want

Igniz by Chamomile not offline, Chamomile and Illuyankas are the same person. Yuri by Rakutai not a KOF 99 version is a KOF 95 version. Chars Last Blade by Ildanaf are offline, the page of Ildanaf still online but the download section is offline.

Touhou section:

Kaguya was never in Hisoutensoku (she only appeared in Imperishable Night so far)

It's done, I ripped all SCWU character stands for the database Nunor, check your inbox, I already sent you all zipped via PM

Spoiler: Want some preview?? (click to see content)

I think yes, there're some NXC chars made for MUGEN that are really assists or enemies from the game, like Dino Crisis' Allosaur. About SCWU, do you receive my message about it (Rario) to be added to database?? Also, I got like 20 chars' stands ripped, there're still a lot to get. Should I send you what I do by now or better wait until I get all of them, what do you think??

As a bonus, I also have a suggestion: What do you think of idea of spliting the Official Fighters section into Fighters and Minigames? That could remove some confussion for these, who aren't familiar with the source game. While it is obvious in some games (like the car in Street Fighter 2 or any instances, where the Minigame is called Minigame or has a similar name), there are still cases, where it isn't. Those, who aren't familiar with, let's say JJBA, could mistake N'Dour for an actual fighter (though he was also a minigame in the source game).

About SCWU, yes, all are playable, there's no assists here (they're from last SCWU version released: GenkaiToppa from 2009). [Added]
About NXC, some are playable and some are enemies/assists, but there're already some assists in your list, so I added a few more [Not sure adding assists... do they have enough sprites to make an actual fighter ? If not it's better to remove assists that i may have added...]

I think Asura should be moved to Special Edited Versions section.
King by Infinite should be removed from Special Versions section. There is already one in Special Edits. Fixed

NHK has made Ikkyu: http://nhkxx.web.fc2.com/ Added

Suigin has also made Ren/Ryoufu:  http://kotenkotenko.blog7.fc2.com/blog-entry-172.html Added.
Also Added Aisha and Rinrin released today

Kai(Shadow Force) shows wrong image. Fixed

Gel, Golem and Monolith by MF should be moved to Original Edits - High Resolution. [Are they really hi-res of just big ?]

Omegapsycho is from Mexico, not Canada.
QY China website is offline.
ZVitor website is here:  http://www.zvitor.com.br/ He is also from Brazil, not USA.  Fixed

You also forgot to mention that Nimame has a different website be now: http://blogs.yahoo.co.jp/mugennimame/folder/990977.html Fixed

Street Fighter IV

Jose Cuervo also made Blanka, Deejay, and Chun-Li. All added

The Blood Warrior [Digitized] section is missing... any plans to add it in the Database?

DBZ section:
- you forgot Ultimate Gohan by Miaoyu: http://mugenguild.com/forum/topics/ultimate-gohan-released-miaoyu-mugen-dbz-dream-150053.0.html
(or Mugendream.com)

Can you add Rakuga Kids?

Existed and leave to exist or truly lost forever and not listed in Mugen Guild Wiki:

Ryo 94 by Kusirojin
Yuri 94 by Anotherlive
Ryo 95 by Anotherlive
Xiangfei 99 by Anotherlive
Kyo 95 by Awakorih
Geese 96 by Wen586
Chizuru 97 by Gen_an
Yamazaki 98 by Gama
Chin 99 by Sorrowedge
Andy 95 by Sorrowedge
TamTam SS4 by Sorrowedge No sound i think...
Iori 99 by Wen586
King 99 by Jin Kazama Listed in KOF99 section
Kyo 99 by OooOO 
Kyo 99 by Jin Kazama
Maxima 99 by Faizeq
Robert 99 by Adeli
Takuma by Wen586
Terry 99 by Blackbocs
Xiangfei 99 by Youngming Listed in KOF99 section
Leona 99 by Socc200 & Szyslak
Leona by K-Z
Leona 98 by Edo Impact Listed in KOF99 section. There are 2 ('98 & '99) ?
Kyo 94/95 by Mouser
Whip 99 by Minky Momo.

Tighriam Ptan and Ohgaki skydrives are offlines.
New Tighriam skydrive: https://skydrive.live.com/?cid=b83dd1c94fcb3105&id=B83DD1C94FCB3105!127 Fixed
New Ohgaki Skydrive: https://skydrive.live.com/?cid=6E75371007E5D7F9&id=6E75371007E5D7F9!107 Fixed

Super Cosplay War Ultra
-You forgot some chars in the list: [Are those playable or assists ?]

And from older sections...
Namco X Capcom
-Saya's image is missing?? No problem Fixed

-These chars are missing in the list: [Are those playable or assists ?]

Akatsuki Blitzkampf
-Flowrallia's Akatsuki preview isn't shown Fixed
-En-Eins, Kati, Marilyn Daiie and Tempelritter images aren't shown [Don't have them yet]

ClayFighter series
-Metasponge64 chars are all offline (in his web he said he's remaking them, I hope so)

Namco X Capcom
-The title should be  with the X instead vs Fixed
-Tetsuo9999's Dig Dug is still online Does not work on 1.0
-Saya image isn't shown [Don't have it yet]
-Tiger Mask's Hideo like is still going to my past webpage (MI) instead new one (Guild) Fixed
-Shimon also made Hideo (with Kyoko as striker, similar to his NXC Karin with Sakura as striker)
-Dazz ripped NXC sprites Added

But Fio's first appearance was in Metal Slug, and Rocky's in Robo Army. Fixed
Guts Man by OnslaughtX & Kung Fu Man is offline. You should add archived link:  http://web.archive.org/web/20070809035140/http://randomselect.piiym.net/ Fixed
Litchi Faye-Ling by QY China is offline. Offlined
Gorimaru Jr shows wrong image. Fixed
Link for KoldSkool's website leads to Kamekaze's site. Fixed