I will post here information regarding the characters, the timeline, events, terms and other things that are both mentioned and not mentioned in the story, but that have a role in defining this "crossover fan-canon".
Timeline (version 2):
This timeline will be using the Battle of Yavin calendar.
The Galactic Standard Calendar and the Earth calendar are not in sync. For example: when it's January on Earth, is July in the Galactic calendar and vice-versa.
(Old Republic era)
3983 BBY
Harry Potter is "born" in Alderaan.
3982 BBY
Kreia travels to the future with an unknown Force power.
Kreia returns with baby Harry to this year.
Harry is adopted by the alderaanian Noble House of Thul.
3978 BBY
Harry joins the Jedi Order and begins his Jedi training
3976 BBY
Unofficial start of the Mandalorian Wars (raids)
3966 BBY
Harry becomes a Jedi Knight
3964 BBY
Official start of the Mandalorian Wars (full invasion of Republic space)
3963 BBY
Harry and Alek (Malak) create the Revanchist faction
Harry adopts the name of Revan after the vision of the Genocide of Cathar.
3961 BBY
Harry, now Revan, discovers the Star Maps in Kashyyyk and Dantooine
3960
The Battle of Malachor V
Revan kills Mandalore the Ultimate
Meetra Surik activates the Mass Shadow Generator
The end of the Mandalorian Wars
Revan and Alek depart into the Unknown Regions with a third of the Republic fleet.
Revan leaves Mandalore's Mask on Rekkiad, and departs to Nathema.
On Nathema, Revan follows the Sith survivors to Dromund Kaas.
Revan and Alek engage the Sith Emperor Vitiate in combat, but the Dark Lord dominates both Revan and Alek's minds, turning them to the Dark Side of the Force.
Revan becomes Darth Revan and Alek becomes Darth Malak.
Vitiate orders the new Dark Lord of the Sith and his apprentice to locate the Star Forge.
As Revan and Malak departed from Dromund Kaas, they regain their wills but remain as Sith Lords.
3959
Revan discovers the remaining Star Maps on Manaan, Tatooine and Korriban.
Revan and Malak crash on Lehon, where they gain access to the Temple of the Ancients, which in turn grants them access to the Star Forge.
The Jedi Civil War begins.
HK-47 is built.
Korriban becomes part of Revan's Sith Empire
Meetra Surik returns to the Jedi Temple on Coruscant, where she is put on trial by the Jedi High Council, who exile her from the Jedi Order.
3958 BBY
Bombing of Telos V
Revan creates his first Sith Holocron, which he then hid in Yavin 4.
3957 BBY
During a battle against a small Republic fleet, a Jedi strike team, headed by the Jedi Padawan Bastila Shan boards Revan's flagship.
Revan is betrayed by Malak, who orders his ship to fire on Revan's own.
Revan is wounded (both physically and mentally) by the attack, Bastila rescues him from the wreckage and bring him before the Jedi Council.
Malak usurps the title of Dark Lord of the Sith
The Jedi Council reprogram Revan's mind and turn him into a soldier loyal to the Republic.
3956 BBY
Revan, unaware of his true identity, is sent on a mission to the Sith controlled world of Taris.
Revan escaped the ship with Carth Onasi on an escape pod.
On Taris, Revan is joined by Mission Vao and Zaalbar.
Revan participates in a Swoop Bike race to release Bastila from a Tarisian gang.
Revan is approached by Canderous Ordo, a Mandalorian mercenary, who proposes him a way of escaping Taris.
Revan buys T3-M4 who helps him in infiltrating the Sith embassy and obtains the blockade codes.
Later, Revan and his team (Bastila, Carth, Mission, T3-M4 and Canderous) steal the Ebon Hawk and escape from Taris, who was being bombarded by the Sith fleet orbiting it.
On Dantooine, Revan has a vision of himself finding a Star Map with Malak on Dantooine.
Revan re-joins the Jedi Order, and completes the 3 trials necessary for him to become a Jedi Padawan.
Revan re-discovers the Star Map on Dantooine and is ordered by the Dantooine Jedi Council to find the Star Forge.
Juhani joins Revan's crew.
Revan travels to Tatooine, where he buys HK-47.
Revan discovers the Tatooine Star Map.
Calo Nord attempts to kill Revan, but is killed instead by Revan, Bastila and HK-47.
Revan travels to Kashyyyk, where Zaalbar is captured by his brother.
Revan descends into the Shadowlands, where he meets Jolee Bindo who joins him.
Revan encounter the exiled Freyyr, who he had been ordered to kill.
Revan decides to assist the former chieftain and recovers the Bacca's blade, who was lodged in a terentatek.
Revan discovers the Kashyyyk Star Map.
Revan helps Freyyr to depose the usurper Chuunndar, and Zaalbar re-joins the crew.
Revan travels to Manaan.
Revan defeats Darth Bandon in a lightsaber duel in Hrakert Station.
Revan discovers the Manaan Star Map after destroying a device that was causing distress to a large sea creature.
Revan travels to Korriban, but he is intercepted by the Leviathan, Saul Karath's flagship.
Revan and his team are captured by the Sith admiral.
During their escape, Revan and his allies encounter Darth Malak, who proceeds to reveal Revan's identity.
After Bastila confirms it to Revan, he and Malak engage in a duel.
Bastila decides to stay behind to halt the Sith Lord, and Revan and the rest of his team are able to escape.
HK-47's memory is restored, and he recognizes Revan has his true master.
On Korriban, Revan joins the Sith Academy.
Revan, during his quest for the blade of Ajunta Pall, encounters the spirit of the deceased Dark Lord.
Revan decides to help the spirit attain peace, and claims the blade for himself.
Revan gives on of the fake blades to Shaardan.
Revan recovers a holocron of Tulak Hord, and kills the hermit Jorak Uln.
Revan finds a group of Sith renegades in the Shyrack caves, and kills them for prestige.
Revan enters the Tomb of Naga Sadow, where he finds the last Star Map and a Sith lightsaber.
Revan kills the plotting Yuthura Ban, and reveals his identity to Uthar Wynn, who proclaims his loyalty to him.
Revan departs to the Star Forge system.
The Ebon Hawk crashed into Lehon, and Revan encounters two Rakata tribes.
Revan wipes out the Black Rakata tribe, and the Elders assist him in entering the Temple of the Ancients with Jolee and Juhani.
The three encounter Bastila, who had been converted to the Dark Side of the Force.
Upon defeating her, Bastila offers Revan the chance of reclaiming his lost identity.
The former Jedi accepts, and both him and Bastila duel against Jolee and Juhani.
Upon disabling the disruptor field, Darth Revan and Bastila return to the Ebon Hawk here they reveal what happened to the crew.
Carth attempts to escape, but he is eaten by a young rancor.
Mission and Zaalbar attempt to duel against Revan, but are killed by the Sith Lord.
The crew of the Ebon Hawk departs to the Star Forge.
A Republic fleet arrives at the Star Forge system.
On the Star Forge, Revan duels against his former apprentice Malak.
Malak is killed by Revan, and he becomes once again the Dark Lord of the Sith.
The Republic fleet is destroyed, and Admiral Dodonna and Jedi Master Vandar are killed in the confrontation.
3955 BBY
Revan orders an attack on all non-Sith databases, with the intent of wiping all the records that can lead the Republic into any Sith world, except for Korriban and Malachor V.
Revan gives the Mask of Mandalore to Canderous Ordo, who becomes Mandalore the Preserver.
Canderous travels to Dxun, where he attempts to unite the Mandalorian clans.
Revan and his empire disappear from the known galaxy, but a small faction remains behind.
The Sith Triumvirate is formed under Darth Traya (Kreia).
Bastila, who had remained behind on Korriban, sends T3-M4 with the Ebon Hawk to find a Jedi or Sith that could prevent the success of the Triumvirate.
The Dark Wars begin.
3954 BBY
Revan and Bastila's son Vaner is born in the Sith Citadel of New Adasta on Ziost.
Kreia is betrayed by Sion and Nihilus.
The First Jedi Purge begins.
3952 BBY
Devastation of Katarr
Visas Marr becomes Nihilus's apprentice.
3951 BBY
Meetra Surik returns to Republic space.
Meetra becomes the 'owner' of the Ebon Hawk.
Meetra re-encounters Atris on Telos V.
Meetra returns to Dantooine, where she encounters Master Vrook.
Visas Marr duels against Meetra, but is defeated and joins her.
Meetra visits Korriban and finds the corpse of Master Lonna Vash
Meetra rebuilds Hk-47.
On Nar Shaddaa, Meetra finds Zez-Kai Ell and is joined by Mira and GO-TO.
Onderon Civil War, where Vaklu is executed for treason.
Meetra meets Kavar.
On Dantooine, the remaining Jedi Council attempts to cut Meetra from the Force, but they are prevented by the arrival of Kreia.
Kreia severs the Council's connection to the Force, and the shock causes the deaths of the three remaining Jedi Masters.
Nihilus is killed aboard the Ravager during an attack on Telos V.
Meetra travels to Malachor V.
Darth Sion is killed in a duel against Surik.
Bao-Dur's remote is destroyed by GO-TO.
Surik engages Darth Traya (Kreia) in a lightsaber duel.
Traya is defeated by Meetra, and the Sith Lord dies after revealing several things about the future of Surik's companions and the fate of the galaxy.
Malachor V survives
3950 BBY
Meetra Surik meets Bastila Shan and her son in Ziost.
Meetra, Bastila, Vaner, HK-47, T3-M4, Mandalore the Preserver and the clans under him depart for the unknown regions to find Revan.
Surik finds Revan in the Unknown Regions, who was following the trail of the True Sith Empire.
Revan's Sith Empire discovers Dromund Kaas.
Revan's Sith Armada engages the fleet of the True Sith above the planet.
Revan's Army initiates an attack on Kaas City and his army manages to conquer the planet.
The remaining Dark Council members are killed in the confrontation.
Revan and Meetra engage the Emperor in a duel, while Bastila duels against Scourge.
Scourge is killed by Bastila.
Meetra is killed by the Sith Emperor, but Revan manages to strike down Vitiate.
The True Sith Empire is absorbed by Revan's Sith Empire and Revan becomes the new Sith Emperor.
The Sith Empire structure is reformed, with characteristics from the empires it was formed from.
The Dark Council is reformed.
Revan, now known as the Sith Emperor, discovers the secrets of Transfer Essence.
Using technology replicated by the Star Forge, the Emperor initiates the reconstruction of Kaas City.
3948 BBY
Kaas City is rebuilt.
The Sith Emperor uses both Sith alchemy and technology to create clones of his body, and by using Transfer Essence, the Emperor manages to survive for nearly four thousand years.
1000 BBY
Bane finds Darth Revan's Sith Holocron in Yavin 4, but the Sith Lord who created it considers its information to be outdated.
Seventh Battle of Russan (Republic pyrrhic victory)
Order of the Sith Lords (Bane's Sith Order) is formed.
(Rise of the Empire era)
70 BBY
Sith scouts discover the Sol System.
Darth Oscopos reports the findings to the Emperor.
36 BBY (1980 AD)
Daniel and Harry Potter are born.
36 BBY
Voldemort attacks the Potter family, leaving one of the boys marked.
Dumbledore decides that Daniel Potter is the Boy-Who-Lived
Harry is believed to be a Squib.
The Potters abandon Harry in front of the Dursleys' doorstep with a letter.
Kreia arrives from the past at this date, and is guided by the force to Harry.
Kreia senses the power of the Force in the infant, and takes him with her to the past, arriving at the year of 3982 BBY.
Between 35 BBY and 22 BBY
The Emperor infiltrates the Jedi Order and assumes his original identity (Harry Potter).
The Republic discovers the Sol System, but keeps the discovery as a high level secret.
22 BBY
'Harry' becomes a Jedi Knight.
'Harry' is ordered by the Jedi Council to investigate the Sol System.
The Tri-Wizard Tournament Begins
Battle of Geonosis
The Clone Wars begin
Daniel becomes the Emperor's apprentice
The Great Galactic War begins
Skirmish in the Tingel Arm (Sith victory)
Assault on the Aparo sector (Sith victory)
Battle of Korriban (Sith victory)
Characters:
(Sith Empire)
The Emperor / Darth Revan / Harrison Potter – The son of Lily and James Potter, younger twin of Daniel Potter and older brother of Alexander and Ethan Potter. Was believed to be a Squib by his family, and was later taken by the Jedi Master Kreia. While he was born on Earth, he considers Alderaan to be his homeworld. In his later life, he became the dreaded Dark Lord of the Sith Darth Revan, who would initiate the conflict known as the Jedi Civil War. Together with Bastila Shan, he had a son named Vaner Shan. During the Battle of Dromund Kaas, Revan and Emperor Vitiate duelled, and with Revan's victory, he became the new Sith Emperor. At least 3961 years old, the Emperor has been plotting the downfall of the Republic and the Jedi for millennia, continuing the work of his predecessor.
Bastila Shan – Once a Jedi Padawan that travelled with the amnesiac Revan, and during those travelled both developed romantic feelings for each other. Bastila was converted to the Dark Side of the Force by Darth Malak. She later became Revan's apprentice and wife.
Vaner Shan – Born in the city of New Adasta on Ziost, Vaner is the son of Sith Lords Darth Revan and Bastila Shan.
Darth Oscopos – A female Sith Pureblood who became the head of the Sphere of Expansion and Diplomacy after her master fell from the Imperial Citadel. She was the one who revealed to Revan the news of the discovery of Earth.
Darth Solutus / Daniel Potter – The Emperor's apprentice and "older" brother. He is also believed by the wizards to be the Boy-Who-Lived.
(Old Empire Sith Lords)
Ajunta Pall – The first 'Dark Lord of the Sith' (Jen'ari). He was redeemed by Revan, due to the fact that the amnesiac Sith Lord wanted to test his own persuasion skills.
Tulak Hord – A Sith Pureblood Jen'ari, and the ancestor to the Evans Family. Harry encounters his spirit in Korriban.
(Order of the Sith Lords / Bane's Sith Order)
Darth Bane - Using the teachings of an holocron of Darth Revan, Bane created the Rule of Two, and with him the Order of the Sith Lords. He was buried in the old Sith academy at Korriban.
Darth Plagueis - A Muun Sith Lord, and once the master of Darth Sidious, before he was killed in his sleep by his apprentice.
Darth Sidious - The current Dark Lord of the Order of the Sith Lords, and the master of Darth Tyrannus.
(Jedi Order)
Anakin Skywalker – The Chosen One of the Jedi, Skywalker was once a slave on Tatooine. He is the Padawan of Obi-Wan Kenobi.
Master Yoda – The Grand Master of the Jedi Order. He is a powerful Jedi who is nearly 900 years old.
Shaak Ti – A Togruta Jedi Master who discussed the growth of the Dark Side with Yoda.
Cin Drallig – A Jedi Battlemaster who was killed by Darth Malgus in the Battle of Korriban.
Serra Keto – Drallig's Jedi Padawan. She was part of the Battle of Korriban, but managed to escape the Helioset Star System.
(Wizards)
James Potter – Harry and Daniel's father. He was once an auror, but is now a professor at Hogwarts.
Lily Potter – Harry and Daniel's mother. Like her husband, she is a professor at Hogwarts.
Filius Flitwick - A professor at Hogwarts with goblin ancestry. Possessing some knowledge about the galaxy, Filius is wary of Harry Potter, believing him to be hiding something.
Albus Dumbledore – The Headmaster of Hogwarts, and the so called Leader of the Light. Considered by Harry to be the wizard equivalent of a Jedi Master, Dumbledore was the one who decided that Daniel was the Boy-Who-Lived.
Draco Malfoy – The son of Lucius and Narcissa Malfoy. Had his mind destroyed by Harry after attacking him with a Severing charm.
(Revan's Terran "Allies")
Cornelius Fudge – The British Minister of Magic. After Harry brainwashed him, he became a loyal servant of the Sith Lord.
Theodore Nott – A student of Hogwarts who witnessed the torture of Draco Malfoy. He was persuaded by Harry to join his side.
Hermione Granger – A student of Hogwarts. She joined Harry after he revealed some facts regarding the Wizarding World to her.
Daphne Greengrass – A student of Hogwarts who also witnessed the torture of Draco Malfoy. Like Theodore, she joined Harry's side.
Miscellaneous:
Kalevos iv tave Tsis – In the Sith language, this term could be roughly translated as either Sith Emperor or Emperor of the Sith. This title appeared on Harry's Blood Test.
Jen'ari – In the Sith language, this translates as Dark Lord. It was the title attributed to the rulers of the Old Sith Empire founded by Ajunta Pall. As many old Sith traditions were revived, the usage of this title was revived as well, but its use is exclusive to the Emperor only.
Sith'ari – An old Sith title translated as either "Lord" or "Overlord". It was first claimed by the legendary Sith King Adas, and later became associated with the Sith'ari Prophecy. The Emperor believed that since Bane was a false Sith, thus not eligible for the title. During the year of 36,383 TYA, the Sith Emperor also mentioned that the true Sith'ari would be born soon.
Sith Empire (True Sith) – The result of the fusion of Revan's Sith Empire and the remnants of the Old Sith Empire. It is ruled by the Sith Emperor (Darth Revan), but it is the Dark Council who runs the day-to-day activities of the Empire. It has four capitals: one on Dromund Kaas, one in Ziost and another in Korriban, while the final one is Lehon.
Jedi Civil War – A confrontation between Revan's Sith Empire and the Galactic Republic with its Jedi allies. With this was, Revan intended to conquer the galaxy, as he saw the Republic unfit to deal with the threat of the Sith Empire in-exile. While war ended after the Battle of the Star Forge, with a victory for the Sith, Revan's Empire vanished shortly thereafter.
First Jedi Purge – Taking place after the Battle of the Star Forge, the first Jedi Purge nearly saw the total eradication of the Jedi Order. It had its end after the death of the Dark Lord of the Sith Darth Traya in Malachor V, at the hands of Meetra Surik.
Other Force – A term created by Darth Revan to refer to an aspect of the Force, and is commonly referred to by wizards as "magic". It is unknown how the Other Force came into existence, but Revan believes that it had something to do with inbreeding and the constant use of objects that channelled the Force though the user, and not though the Force itself. Unlike the Force, users of the Other Force require certain instruments to channel it, for example, wands.
Sith Citadel – An ancient Sith fortress located in the city of New Adasta on Ziost. It once served as the capital of the Old Sith Empire and it was here that Vaner Shan, the son of the Dark Lord of the Sith Revan was born.
Zuti kia netvarka – Sith phrase that translates as "Go to Chaos (hell)".
Qâzoi Kyantuska – Translated as "Supress Thought", this ancient Sith magical ability was used by Darth Revan to control Cornelius Fudge.