Disclaimer: I am not George Lucas or J.K. Rowling.
Here are the characters in this story:
Harry Potter - Luke Skywalker (age 15), fifth year and co-leader of Yoda's Rebellion
Ron Weasley - Han Solo (age 15), fifth year and co-leader of Yoda's Rebellion
Hermione Granger - Leia Organa (age 16), fifth year and co-leader of Yoda's Rebellion
Ginny Weasley - Mara (Jade) Solo (age 14), fourth year and member of Yoda's Rebellion
Neville Longbottom - Wedge Antilles (age 15), fifth year and member of Yoda's Rebellion
Luna Lovegood - Qwi Xux (age 14), fourth year and member of Yoda's Rebellion
Fred Weasley - (Ton) Phanan Solo (age 17), seventh year and member of Yoda's Rebellion
George Weasley - Face (Loran) Solo (age 17), seventh year and member of Yoda's Rebellion
Percy Weasley - Jacen Solo (age 19), aide to Cal Omas
Bill Weasley - Ganner (Rhysode) Solo (age 25), member of the Jedi Order and employee at Muunilinst
Molly Prewett Weasley - Jaina Solo (age 49), member of the Jedi Order
Arthur Weasley - Jonash Solo (age 49), Head of the Misuse of Mundane Artifacts Office
Albus Dumbledore - Yoda (age 114), Grand Master and leader of the Jedi Order
Amelia Bones - Jysella Terrik (age 60), Head of the Justice Council
Alastor Moody - Garm Bel Iblis (age 114), member of the Jedi Order
Draco Malfoy - Galen Marek (age 15), fifth year and member of the Peace Brigade
Lucius Malfoy - Dooku Marek (age 43), Sith Lord
Nymphadora Tonks - Noorian Tahl (age 21), stormtrooper and member of the Jedi Order
Kingsley Shacklebolt - Kam Solusar (age 45), stormtrooper and member of the Jedi Order
Elphias Doge - Ikrit (age 114), Senator and member of the Jedi Order
Lee Jordan - Wes Janson (age 17), seventh year and member of Yoda's Rebellion
Minerva McGonagall - Mon Mothma (age 74), Master of Metamorphosis and member of the Jedi Order
Filius Flitwick - Sio Bibble (age 74), Master of the Force
Severus Snape - Darth Vader (age 35), Master of Potions and undercover Jedi agent in the Sith Order
Emmeline Vance - Tyria Sarkin (age 34), member of the Jedi Order
Lord Voldemort / Tom Riddle - Lord Sidious / Cosinga Palpatine (age 68), Dark Lord of the Sith
Nagini - Maul (age unknown), amphistaff and Byss clone
Dolores Umbridge - Natasi Daala (age 64), Chief of Staff to Cal Omas and Master of Defense Against the Dark Side of the Force
Sirius "Padfoot" Black - Obi-Wan "Ben" Kenobi (age 36), member of the Jedi Order
Remus "Moony" Lupin - Qui-Gon "Sivrak" Jinn (age 35), member of the Jedi Order
Dobby - I-5YQ "I-Five" (age 30), ally of Yoda's Rebellion
Sturgis Podmore - Quinlan Vos (age 35), member of the Jedi Order
Rubeus Hagrid - Chewbacca (age 66), Master of Animal Friendship and member of the Jedi Order
Olympe Maxime - Mallatobuck (age 65), headmistress of the Academy of Carida (mention only)
Grawp - Scut (age 60), half-brother to Chewbacca
Argus Filch - Jurokk (age 58), caretaker
Rita Skeeter - Javis Tyrr (age 44), journalist for the HoloNet
Hestia Jones - Shada D'ukal (age 43), member of the Jedi Order
Dedalus Diggle - Elegos A'Kla (age 43), member of the Jedi Order
Walden Macnair - Savage Opress (age 42), Sith Lord
Colin Creevey - Dak Ralter (age 14), fourth year and member of Yoda's Rebellion
Dennis Creevey - Cole (Fardreamer) Ralter (age 12), second year and member of Yoda's Rebellion
Hedwig - R2-D2 (age 15), astromech droid
Kreacher - PROXY (age 100), servant to the House of Kenobi and ally of the Sith
Angelina Johnson - Dia Passik (age 18), seventh year
Alicia Spinnet - Shalla Nelprin (age 17), seventh year
Katie Bell - Tahiri Veila (age 16), sixth year
Cedric Diggory - Biggs Darklighter (deceased), Galactic champion (mention only)
Cho Chang - Callista Ming (age 16), sixth year and member of the Jedi Order
Walburga Black - Taselda Kenobi (deceased), mother of Obi-Wan and Gormel Kenobi
Phineas Nigellus Black - Thrackan Sal-Solo Kenobi (deceased), former Grand Master and reluctant ally of the Jedi
Roger Davies - Geith Eris (age 17), seventh year
Ragnok - Damask (age unknown), banker
Graham Montague - Sora Bulq (age 16), sixth year
Millicent Bagnold - Ponc Gavrisom (age 74), retired Chief of State (mention only)
Orion Black - Dzym Kenobi (deceased), father of Obi-Wan and Gormel Kenobi (mention only)
Rolanda Hooch - Garven Dreis (age 61), coach
Vernon Dursley - Owen Lars (age 46), uncle to Luke Skywalker
Petunia Dursley - Beru Lars (age 46), aunt to Luke Skywalker
Dudley "Big D" Dursley - Laze "Fixer" Loneozner Lars (age 14), cousin to Luke Skywalker
Peter "Wormtail" Pettigrew - Nute "Viceroy" Gunray (age 36), Sith servant
Alphard Black - Cin Drallig Kenobi (deceased), uncle of Obi-Wan Kenobi
Piers Polkiss - Windy Starkiller (age 15), bully
Malcolm - Deacon "Deak" (age 15), bully
Gordon - Camie Marstrap (age 15), bully
Dennis - Janek "Tank" Sunber (age 15), bully
Vincent Crabbe - Cornelius Evazan (age 15), fifth year and member of the Peace Brigade
Gregory Goyle - Ponda Baba (age 15), fifth year and member of the Peace Brigade
Pansy Parkinson - Vestara Khai (age 15), fifth year and member of the Peace Brigade
Seamus Finnagan - Nien Nunb (age 15), fifth year
Dean Thomas - Lando Calrissian (age 15), fifth year and member of Yoda's Rebellion
Poppy Pomfrey - Vokara Che (age 49), nurse
Parvati Patil - Winter Retrac (age 15), fifth year and member of Yoda's Rebellion
Lavender Brown - Bria Tharen (age 15), fifth year and member of Yoda's Rebellion
Padma Patil - Sheltay Retrac (age 15), fifth year and member of Yoda's Rebellion
Godric Gryffindor - Darth Revan (deceased), founder
Salazar Slytherin - Exar Kun (deceased), founder
Rowena Ravenclaw - Bastila Shan (deceased), founder
Helga Hufflepuff - Meetra Surik (deceased), founder
Cuthbert Binns - Vodo Siosk-Baas (deceased), Master of Galactic History
Nicholas de Mimsy Porpington - Canderous Ordo (deceased), spirit of House Revan
Bloody Baron - Jace Malcom (deceased), spirit of House Kun
Fat Friar - Mission Vao (deceased), spirit of House Surik
Helena Ravenclaw - Satele Shan (deceased), spirit of House Shan
Fleur Delacour - Alema Rar (age 18), employee at Muunilinst and member of the Jedi Order (mention only)
Peeves - Bogan (amortal), Force entity
Rosmerta - Ackmena (age 45), bartender
Fang - Drang (age unknown), vornskr
Pigwidgeon - Whistler (age unknown), astromech droid
Regulus Black - Gormel Kenobi (deceased), former Sith Lord (mention only)
Rufus Scrimgeour - Borsk Fey'lya (age 45), Stormtrooper Commander (mention only)
Eric Munch - Lon Shevu (age 50), security guard
Septima Vector - Sifo-Dyas (age 36), Master of Precognition
Giant Squid - Colo Claw Fish
Bob - Kell Tainer (age 56), Republic employee
Cornelius Fudge - Cal Omas (age 49), Chief of State
Wilbert Slinkhard - Thull Yularen (deceased), author (mention only)
Marlene McKinnon - Etain Tur-Mukan Skirata (deceased), member of the Jedi Order
Crookshanks - Anji (age unknown), nexu
Hermes - SD-XX "Double Ex" (age 18), astromech droid
Stan Shunpike - Nick Rostu (age 19), conductor of the Far Ranger
Ernie Prang - Qorl (age 76), pilot of the Far Ranger
Irma Pince - Jocasta Nu (age 83), archivist
Aurora Sinistra - Tionne Solusar (age 45), Master of Astronomy
Benjy Fenwick - Dorsk 81 (deceased), member of the Jedi Order
Buckbeak - Boga (age unknown), varactyl
Ernie McMillan - Corran Horn (age 15), fifth year and member of Yoda's Rebellion
Hannah Abbot - Iella Wessiri (age 15), fifth year and member of Yoda's Rebellion
Justin Finch-Fletchley - Ooryl Qrygg (age 15), fifth year and member of Yoda's Rebellion
Arabella Figg - Ferus Olin (age 43), member of the Jedi Order
Susan Bones - Mirax Terrik (age 15), fifth year and member of Yoda's Rebellion
Pomona Sprout - Yaddle (age 72), Master of the Living Force
Mafalda Goshawk - Mander Zuma (age 53), author (mention only)
Sybill Trelawney - Roan Shryne (age 34), Master of Farseeing
James "Prongs" Potter - Anakin "Tan" Skywalker (deceased), member of the Jedi Order
Lily Evans Potter - Padme Amidala Skywalker (deceased), member of the Jedi Order
Firenze - Thrawn (age 24), Master of Farseeing
Bane - Thrass (age 49), Chiss
Ronan - Stent (age 27), Chiss
Magorian - Formbi (age 56), Aristocra of the Chiss Ascendancy
Edgar Bones - Booster Terrik (deceased), member of the Jedi Order
Caradoc Dearborn - Crix Madine (deceased), member of the Jedi Order
Gideon Prewett - Soontir Fel (deceased), member of the Jedi Order
Fabian Prewett - Todr Fel (deceased), member of the Jedi Order
Dorcas Meadowes - Tresina Lobi (deceased), member of the Jedi Order
Anthony Goldstein - Kenth Hamner (age 15), fifth year and member of Yoda's Rebellion
Stubby Boardman - Adalric Brandl (age 36), celebrity (mention only)
Broderick Bode - Airen Cracken (age 55), member of Republic Intelligence
Doris Purkiss - Fable Astin (age 36), friend of Adalric Brandl
Xenophilius Lovegood - Omwati Xux (age 40), editor of the SludgeNews
Euan Abercrombie - Sothais Saar (age 11), first year
Rose Zeller - Turi Altamik (age 11), first year
Inigo Imago - K'kruhk (age unknown), author (mention only)
Vicky Frobisher - Seha Dorvald (age 14), fourth year and member of the Force Club
Geoffrey Hooper - Doran Tainer (age 14), fourth year
Patricia Stimpson - Bhindi Drayson (age 17), seventh year (mention only)
Kenneth Towler - Baljos Arnjak (age 17), seventh year (mention only)
Griselda Marchbanks - Cha Niathal (age 165), examiner and ally of the Jedi
Tiberius Ogden - Gilad Pellaeon (age 91), resigned Senator and ally of the Jedi
Cassandra Trelawney - Jula Shryne (deceased), great-grandmother of Roan Shryne
Marietta Edgecombe - Erisi Dlarit (age 16), sixth year and member of Yoda's Rebellion
Michael Corner - Kyp Durron (age 15), fifth year and member of Yoda's Rebellion
Zacharias Smith - Waxarn Kel (age 15), fifth year and member of Yoda's Rebellion
Karkus - Quoreal (deceased), former Supreme Overlord of the Yuuzhan Vong (mention only)
Golgomath - Shimrra Jamaane (age 52), Supreme Overlord of the Yuuzhan Vong (mention only)
Tenebrus - Fero Xyn (age unknown), voxyn
Andrew Kirke - Dyon Stadd (age 16), sixth year
Jack Sloper - Kajin Savaros (age 16), sixth year
Armando Dippet - Fae Coven (deceased), former Grand Master
Fridwulfa - Attichitcuk (deceased), father of Chewbacca (mention only)
Wilhelmina Grubbly-Plank - Shaak Ti (age 51), Master of Animal Frienship
Aberforth Dumbledore - Talon Karrde (age 112), bartender
Everard - Genarra (deceased), former Grand Master
Dilys Derwent - Cilghal (deceased), former Grand Master
Dexter Fortescue - Ronhar Kim (deceased), former Grand Master
Bellatrix Lestrange - Ysanne Isard (age 44), Sith Lord
Rodolphus Lestrange - Armand Isard (age 44), Sith Lord
Rabastan Lestrange - Kirtan (Loor) Isard (age 42), Sith Lord
Avery - Kinman Doriana (age 35), Sith Lord
Antonin Dolohov - Wilhuff Tarkin (age 44), Sith Lord
Mulciber - Grievous (age 35), Sith Lord
Augustus Rookwood - Nom Anor (age 44), Sith Lord
Frank Longbottom - Jagged Antilles (age 35), patient at Coruscant Medical
Alice Longbottom - Zena Antilles (age 35), patient at Coruscant Medical
Augusta Longbottom - Syal Antilles (age 71), grandmother to Wedge Antilles
Welcome Witch - CZ-series droid (age unknown), communications/business droid
Hippocrates Smethwyck - Uli Divini (age 39), healer
Augustus Pye - Tekli (age 30), healer
Urquhart Rackharrow - Jos Vondar (deceased), healer (mention only)
Willy Widdershins - Crev Bombaasa (age 34), criminal
Unknown - Ebenn Q3 Baobab (deceased), healer
Miriam Strout - Thracia Cho Leem (age 45), healer
Crabbe - Evazan (age 43), Sith Lord
Goyle - Baba (age 43), Sith Lord
Nott - Ulic Qel-Droma (age 34), Sith Lord
Mundungus Fletcher - Niles Ferrier (age 53), smuggler
Agnes - Fi Skirata (age 45), patient at Coruscant Medical
Puddifoot - Hermione Bagwa (age 34), restaurant proprietor
Summerby - Sila Kott (age 17), seventh year
Tobias Snape - Watto Vader (deceased), father of Darth Vader
Eileen Prince - Shmi (of) Tatooine (deceased), mother of Darth Vader
John Dawlish - Merratt Jaxton (age 46), stormtrooper
Stebbins - Kitster Banai (age 35), former classmate of Anakin Skywalker
Eddie Carmichael - Mako Spince (age 16), sixth year
Harold Dingle - Zeen Afit (age 16), sixth year
Daphne Greengrass - Juno Eclipse (age 15), fifth year
Tofty - Jan Dodonna (age 60), examiner
Pierre Bonaccord - Contispex I (deceased), former Supreme Chancellor
Mafalda Hopkirk - Viqi Shesh (age 41), Republic bureaucrat
Jugson - Zsinj (age 45), Sith Lord
Williamson - Sien Sovv (age 34), stormtrooper
Perkins - Peckhum (age 73), employee of the Misuse of Mundane Artifacts Office
Terry Boot - Voort "Piggy" saBinring (age 15), fifth year
Gilderoy Lockhart - Valenthyne Farfalla (age 41), patient at Coruscant Medical
Fawkes - Vergere (immortal), Fosh
Pandora Lovegood - Madam Xux (deceased), mother to Qwi Xux (mention only)
Locations:
Hogwarts School - Jedi Temple (Room of Requirement - Jedi Praxeum)
Number 12, Grimmauld Place - Stewjon (The Negotiator)
Magnolia Crescent - Jundland Wastes
Department of Mysteries - NRI Headquarters
Hall of Prophecy - Tower of Reconciliation
Brain Room - Holocron Chamber
Death Chamber - Star Chamber (The Veil - Infinity Gate)
Love Chamber - Reflection Gardens
Time Room - Aing-Tii Temple
The Hog's Head - The Wild Karrde
The Three Broomsticks - Dex's Diner
Hogwarts Lake - Dac Ocean
Ministry of Magic - Imperial Palace (Courtroom Ten - Grand Convocation Chamber)
Hogsmeade - CoCo Town
Honeydukes - Dex's Donuts
Forbidden Forest - Unknown Regions
Surrey - Tatooine
Number 4, Privet Drive - Lars Homestead
Platform 9 3/4 - Docking Bay 94
King's Cross Station - Mos Eisley Spaceport
Quidditch Pitch - Smashball Field
St. Mungo's Hospital - Coruscant Medical
Madam Puddifoot's - Madam Bagwa's
London - Coruscant
Hogsmeade Station - Docking Bay 327
Hogwarts Express - Jedi Cruiser
Species:
Human - Human
Goblin - Muun
Dementor - Tusken
Giant - Yuuzhan Vong
Half-Giant - Wookiee
Boggart - Gurlanin
Muggle - Mundane
Wizard - Force wielder
Hippogriff - Varactyl
Thestral - Voxyn
Centaur - Chiss
Bowtruckle - Droch
Doxy - Rakghoul
Metamorphmagus - Clawdite
Boarhound - Vornskr
Kneazle - Nexu
Phoenix - Fosh
House-elf - Protocol droid
Squib - Void
Veela - Zeltron
Leprechaun - Squib
Owl - Astromech droid
Ghost - Force spirit
Poltergeist - Force entity
Organization
Gryffindor - Revan
Slytherin - Kun
Ravenclaw - Shan
Hufflepuff - Surik
Death Eater - Sith Order
Order of the Phoenix - Jedi Order
Ministry of Magic - Galactic Republic
Wizengamot - Galactic Senate
Dumbledore's Army - Yoda's Rebellion
Inquisitorial Squad - Peace Brigade
Auror Office - Stormtrooper Corps
Advance Guard - Ten Knights
Other:
Wizard's Chess - Dejarik
Quidditch - Smashball
Daily Prophet - HoloNet
The Quibbler - The SludgeNews
Auror - Stormtrooper
Bludgers - Dovin basals
Quaffle - Grav-ball
Golden Snitch - Golden Globe
Apparition - Force Travel
Disarming Charm - Force Disarm
Killing Curse - Force Kill
Cruciatus Curse - Sith Lightning
Imperius Curse - Affect Mind
Summoning Charm - Force Pull
Stunning Spell - Force Stun
Patronus Charm - Force Aura
Reductor Curse - Force Destruction
Shield Charm - Force Defend
Impediment Charm - Force Slow
Banishing Charm - Force Push
Disillusionment Charm - Alter Image
Alohamora - Ionize
