As compiled by TheForce.Net and sources...
Main Hero Characters
Jedi Master Qui-Gon Jinn
Jedi Knight Obi-Wan Kenobi
Padme Naberrie/Queen Amidala
Anakin Skywalker
Jar Jar Binks
R2-D2 Secondary Hero Characters
Captain Panaka
Ric Olie - Bravo Leader
Shmi Skywalker
Gungan King - Boss Nass
Gungan General Ceel
Gungan Captain Tarpals
Princess Ellie
Sio Bibble
Yane - Queen's Handmaiden
Eirtae - Queen's Handmaiden
Sache - Queen's Handmaiden
Rabe - Queen's Handmaiden
Sabe - Queen's Handmaiden/Double
Supreme Chancellor Valorum
Bravo 5/Naboo Pilot
C3P0 Jedi Council Members:
Mace Windu
Yoda
Ki-Adi-Mundi
Plo Koon
Yarael Poof
Eeth Koth
Adi Gallia
Saesee Tinn
Even Piell
Yaddle
Oppo Rancsis
Depa BillabaMinor/Background Hero Characters
Mos Espa:
Kitster
Jira
Wald
Seek
Amee
Fanta
Pod Race:
Jabba the Hutt
Mawhonic
Gasgano
Ratts Tyerell
Neva Kee
Obitoki
Ody Nysturall
Shaggy
Slide Paramita
Teemto Pagalies
Terter
Wan Sandage
Xelbree
Pod Race Announcer
Senate:
Vice Chairman Mas Amedda
Prince Bail Organa
Lott Dodd
Lott Dodd's Assistant #1
Lott Dodd's Assistant #2
Aks Moe
Orn Free Taa
Passel Argente
Mot-Not Rab
Swokes Swokes
Tonbuck Toora
Republic:
Republic Cruiser Captain
Republic Cruiser Pilot
Naboo:
Gungan Rep Been
Gungan Rep Teers Main Villian Characters
Sith:
Darth Sidious
Darth Maul
Senate:
Senator Palpatine Neimoidians/Trade Federation:
Nute Gunray
Rune Haako
Dofine Daultoy
Tey-How
TC-3 - Federation Protocol Droid Mos Espa:
Watto
Sebulba General Backgroud Characters
Tatooine:
Nikto
Quee Quay
Squid Face
Twi'lek Girl #1
Twi'lek Girl #2
ASP-77
Pod Race:
Otoga 222 - Pit worker droid
Clean-up Droids - Pod Race
DUM-4 Pit Droid - Pod Race
Pod Race Camera Droid
Naboo:
Multiple Naboo Footsoldiers
Palace Hangar Ground Crew
Naboo Civilians
Naboo Guards
Federation/Neimoidian:
Battledroids
OOM-9 - Battledroid Commander
3B3 - A Battledroid
OWO-1 - A Battledroid
Destroyer/Wheel Droids
P-59 - Destroyer Droid
PK-4 - Federation Pilot Droid
Various Background Neimoidians
EG-9 - Worker Droid on Federation Battleship
Sith:
Sith Probe Droid
Various:
G8-R3 - R3 Unit
Gonk
Neo Hoppe Probe Droid
TC4 - Protocol Droid in Senate
OTT-RM
Rolo Droid