I have seen it mentioned several times but there is no thread yet with Character names. I have the storm of Chaos book and will go threw and give some names and descriptions for Characters. Apart from the names nothing will be copied for legal stuff.... A lot depends on the time this campaign is based on in the warhammer world... Also very vague descriptions so if ya want do more research just google name... One could be a leader of each different empire/chaos faction

Chaos-
Kordel Shorgaar
He is a standard bearer for the swords of chaos he is a tough bloke who killed a whole tribe etc.

Archaon the everchosen-lord of the end times.
The big bad boss dude for chaos really tough maybe the starting lord for chaos...

Vardek Crom
Another hardcore fighter dude really strong in close

Be'lakor the dark master
Demon leader

Empire-

Karl Franz
big boss dude for empire really good leadership skillz etc.

Valten Exalted of Sigmar
Blacksmith or something rose up to fight Archaon got gifts from god... Some god reincarnated apparently...

High Priest Ar-Ulric Emil Valgeir

Volkmar the grim-
Grand Theogonist

Boris Todbringer-
Elector count of Middenland

Vorn Thugenheim-
Standard Bearer of Middenheim

Dwarf-

Ungrim Ironfist
Slayer king of Karak Kadrin

Garagrim Ironfist
Warmourner of Karak Kadrin

High King Thorgrim Grudgebearer

High Elf-

Teclis
Wizard dude

Orkz

Borgut Facebeater
Tough orc leader bloke

Grimgor
Bigger leader bloke

Dark Elves-

Witch King Malekith
Big leader of Dark elves

Morathi
Nasty sorceress chick

Bretonia-

King Leoncoecur

Vampire Counts-

Manfred von Carstein

Thats a start list hopefully everyone addz. That is just from storm of chaos book and there are thousands of other characters in the warhammer world :P