Here is the list. I divided it into three sections, positive, negative, and unknown. At the top is a section devoted to notes by BR and Seiryuga (who help Bleedman make PpGD.)

BR/SEIR NOTES:
The character charts cannot be considered 100% priority, they just have heavy weight on them as being under Bleedman's personal scrutiny.
No mixing in SB (Sugar Bits) or GT ( Grim Tales).

Approved/Positive Responses

dethklok is more metal than most real metal bands
Flapjack
The Mooninites.
Tuck and Brad from MLaaTR
Scotsman and that Blue Morpheous guy
Sky Patrol
Sunny from Class of 3000 as a music teacher
Ed Edd’n Eddy
Eh product advertising can be done but it'll be (Editors) own reference on what (they) like
The phrase "Techno Bikini"
Clark Kent/Superman as a Journalist.
Awesomeness
2 Stupid Dogs
Homage to Wolverine (but not actually wolverine)
Tony Soprano (lol)
Madam Foster
A comic convention
Wayne McClane (lol)
Jimmy Neutron
Slade from Teen Titans
Technology conference
A scenario like a sushi place or a sauna/bathhouse will be used
Aku
Meta jokes
General Skarr
The villain Bane robbing a bank (not bad)
Johnny Bravo
Space Ghost Coast to Coast show with Space Ghost interviewing Vexus. (good idea!)
Keyboard Cat
Time Travel will actually be addressed in the comic in a fairly spectacular fashion.
Monkey
MINDY (from GAoBM)
Ratman in some obscure capacity
Chester and AJ
Morebucks
Action Hank
Have a trekkie fight THE star wars kid
Death of Sam, and the destruction of the Dark Star Council. (guaranteed)


Disapproved/HELL NO Response

NO FURRIES
NO ANIME: Most ANIME and MANGA continuities are too fucking Japanese to toss into this ridiculously American Ass Plot. Most of them will be avoided
We will avoid adding more puffy-themed super girls
Crash Bandicoot
Disgaea characters
Naruto and Characters
MM series
Kingdom Hearts
DBZ Characters
Loki from Mythical Detective Loki Ragnarok
One Piece Characters
Pokemon Characters
Zophise from Zatch Bell
Death Note Characters
Haruhi Suzumiya Characters
Amaterasu of Okami
RKC (well its his Code name)(Custom character. Denied by Seir)
Braveun from SB
DOKURO-CHAN
Gynoids (female looking robots)
Fullmetal Alchemist characters
Gundams
Bleach Characters
Nudity
Tyki mikk, Road kamelot, and Jasdevi from D.gray-man
King Ghidorah
Swat Katz
Transformers are not important in the story as of right now (might show up in obscure cameo but not likely)
Final Fantasy Characters
Rowdyruff/evil/alternate version of Bell
Aliens and Predators (once again obscure cameo at most, not likely)
Space Pirates and Samus
No Zerg, no xenomorph, no brood (no hive aliens)
Evangeline Athanasia Katherine (Kitty) McDowell
Nobody's OC characters will appear (except the team's hahahahaha whoo)
Luke from Tales of the Abysses
Utena or Anthy from Revolutionary Girl Utena (or any other characters)
SUPER ROBOT MONKE TEAM HYPER FORCE
Ninja turtles
Demongo (he died!)
Brynn, or any of Griddles’ Girls, Griddles' fic is not affiliated with the official PPGD storyline
No Futurama. HELLO. 1000 YEARS IN THE FUTURE
Dr. Who (And possibly some characters)
Ben 10 won't be in this since Bleed doesn't really like the idea of the show
Guitar Hero Game
We don't need anymore monster ideas
Liberty Prime from Fallout 3 (FUTURE???? arrghh)
Blues Clues
Nina (from Breath of Fire V)
Blood Knight (Now Blood Lord)
Mr Beans
No Furry Citadels
Megaman series
Sonic is not in PpGD, nor will he be, nor will any itineration of his friends
Yukishiro Enishi
Scrooge and Donald: Disney is not WB
Literature
Samurai Jack having a son
Felix the Cat
John Wilkes Booth
Tenchi Muyo/Universe/In Tokyo Characters
Cat Dog
Bill & Ted (reference maybe)
Harold & Kumar
Jay & Silent Bob (reference maybe)
Marvel Charters
Tsubasa: Reservoir Chronicles
Nev the really funny bear from Smile can join up with courage (NO)
Basil Brush he is a squirrel so he can work with IM weasel (NO)
Jonas brothers (WHAT NO)
Duck Dodgers: Timeline coherence check: FAILED
While (Seir) admires clamp's works, we're strictly not adding in more anime cameos.
Nintendo characters
Neku
Watchmen was in the 80s
Captain Falcon (Nintendo)
Barack Obama
Pommy (Nintendo)
Nemesis
Tales series
PPGZ
Dora the explorer
Bomber man Characters. No neat way they can tie into PPGD.
Kim Possible
Hannah Montana
Tak
Objects from books. Keep it some what reasonable.
American Dragon (Jake Long)
Lilo and Stitch
Karl Kroenen
The Thornberries
As Told By Ginger
(Recess Gang)
Metal Gear Solid (reference? cameo? not likely)
Totally Spies
Yu-Gi-Oh cameo
Maximum Ride is an anomaly, considering its origins
Godzilla...live action...japan
Deadpool (Marvel)
Afro from Afro Samurai (No, we can't just put someone in because he's "bad ass")
Code Lyoko
KND and Universe
Seth MacFarlane (E.G. Family Guy)
Boba Fett
Braniac is dead in PpGD universe
No Venom or Doc Ock (MARVEL! this is a universe with DC in it!)
No Pumpkinator--enough with the GT SB crossovers!
No Plankton, no Spongebob. The most you'd get from Spongebob is a cameo of Spongebob himself in some flyby underwater
Plasmus, eh, likely not, unless it's some cameo that can convey his unimportance
Dick Hardly from PPG (Died)
The joker is sadly too epic
Pretty much got the principal job sorted out (General Skarr)
BABY SITTER FOR THE GIRLS
People from gta, saints row, and bully? (NO VIDEO GAMES)
The Spy won't fit too well
Ash from the Evil Dead series
Digimon characters
Vash from Trigun
Mitsurugi from Soulcalibur
Phineas and Ferb
Daria Morgendorffer from the Show Daria.
Kamen Rider characters (After Kainsword, by the gods no.)
Martin Mystery
Pipiro and Pockle from Zwei!!
The Mighty Bee
The Flintsons
The Jetsons
Avatar: The Last Airbender
Ghostbusters (reference)
Archie comics
Warner Brothers (And the Warner Sister Dot)
Rurouni kenshin
Chrono Trigger
NO MORE MONSTER IDEAS.
NOTHING THAT LOOKS LIKE POWER RANGERS: live action japanese shows are worse than anime
Nagisa Kaworu from Evangelion
Alex Mercer (Prototype)
No Star Trek or Star Wars in-canon references
Sabrina, the Animated Series
Squirtle will not appear in PpGD
King from Burger King
Ronald McNotAppearingInPpGD.
Monster Allergy
Mung Daal and Shnitzel
"Little Hitler. Always having some fun."
Twilight
John McClane look-a-like.
Tom Cruise
Jesus McClane
Bell kill Sam with Frostmourne
Heroes cameo
Kainsword a cameo and kill him off in a lulzy manner.
-Indiana Jones- The History Teacher for the girl's school
Xiaolin Showdown
David Xanatos
Space Nazis from hell.
Gandalf-looking traffic police officer or a hobo wielding a Stop sign and shouting "You shall not pass" to the drivers on the streets
Trekkies and the SW Kids gang up and beat up Jar Jar?
John Cena
Pedobear should be printed on the panties of whoever is in the next panty-shot.
Warden, from Superjail
Minimoose


Finally for emphasis so it is not ignored: NO DISNEY! IF IT IS DISNEY: NO!


Unknown Status

Johnny Test
Johnny Quest
DC Characters
PpG Characters
Justice League Characters
Danny Phantom Characters
Other Bands, like the Beetles and such
HIHIPUFFYAMIYUMI (Unknown if it counts as anime)
Total Drama Island characters
ChalkZone in the form of a cameo appearance by Snap on a chalkboard somewhere.
A glimpse of Bleedman's stand and display. Possibly with the man himself, provided that Bleed would want to draw himself.
Students reading the snafu forums
Bubbles taking her time looking at broaches on a display in a booth. I want her to see a pedobear platinum seal among the broaches.
juniper lee
I know we said no Futurama characters, but how about a reference to the series with a small tattered missing person poster seen on the ground in one panel, with an image of Fry on it?
-Mucha Lucha (Ricochet (with El Rey), Buena Girl, and the Flea (just a kid in a mask, right?) They can be shown on the Wrestling team for the school with the coach: Senior Hasbeena.
-Jackie Chan Adventures (Jackie, Jade, Uncle, and Torhu) Cameos except for Jade and Uncle. They both have a bit of roles to help the PPG in someway. Captain Black can be in the secret service with the Rowdy Ruff Boys.
Statler and Waldorf for a joke cameo where they review the comic
A costume party/school dance.
"Stalking Bleedman Cameo's"
Robot Jones and Robot Boy
Inspector Gadget
Freakazoid
Jay Sherman
BTTF DeLorean
El Tigre
Bill Nye (as a judge for the Science Fair)
Kit, from Knight Rider.
Vicky (from fairly odd parents)
Characters from 6teen
Yani the Janitor
Shaggy as a track coach
The Kool-Aid Guy
Foster's Home For Imaginary Friends
Syndorme from The Incredibles
Norm the Genie
TV Puppet Pals
Plank from (Ed Edd and Eddy) HAS to be there somewhere sometime hahaha it's a must! It shouldn´t be hard to just show the piece of wood lying somewhere
box ghost
BR’s smug smiley
Butters from South Park
the Tardis and Dr Who in the background
Dr House
T.O.M. from Toonami (either T.O.M. 1, 2, or 3)
I.R. Baboon
Sam and Max