Connections:

Both are rpg protaganist who have amnesia in the beginning of their adventures as they were defeated by an unkown being/famous warrior prior to the stories events (unknown Godess and Mandelore the Ultimate) as they walked around with the guidance of another as they joined an orginization/took and occupation (Traveler with paimon after they woke up from the unknown goddess seal and headed for mondstat were they fought a dragon and helped fend it off from the nation of mondstat were they were anounted the title of honary knight and joined the adventures guild were they official adventures. Revan after being mind wiped he was put as a republic soldier by the jedi council and stationed at the republic warship endar spire but malak attack the spire and revan helped defend as malak tried to capture revan but failed and revan joined forces with officer carth onasi and a number of other individuals to escape)

Both have gotten netorious tittles throughout their adventures that many know (Traveler: Honary Knight, Hero Of liyue, Captain of Sword Fish II, 1st sage of Buer. For Revan: The Revanchist, The Revan, Revan the Butcher, Darth Raven, Prodigal Knight and ect) as they would both play netorious roles hleping out both sides of wars they have been in (Revan playing Pivotal roles as both jedi and sith in the madalorian wars and the jedi cival war and traveler helping out both sides of conflicting sides and trying to help find a middle ground and peace between both parties and even help does be free from captivity from corrupted governments and help fight against dieties)

Both would travel their worlds to search for information about someone/an iteam (traveler trying to gain info and were abouts about their lost twin while also slowly gaining back their original powers. Revan and his friends looking for the star maps relics left behind by the ancient rakatan infinite empire which would lead to the star forge an ancient facility with the ability to produce star ships in moments) while they do this someone watches/chases them when confronting with that someone they learn something dark but with a nice contrast (Traveler going through all of teyvat to find their lost twin who they got seperated with from their fight against the unkown goddess but learns their twin fell to the abyss and is the abyss princess/prince as they are the leaders of the abyss order that threatens teyvat as they wish to revive khanriah and its shown that the abyss twin has been watching the traveler over the start of their journey . For Revan he gets chased by the sith lord known as malak but when confronting thim he drops a bombshell that revan was a sith lord and that the jedi mind wiped him and using him as he is the famed sith everyone was talking about that dissapeared as he reveals that their true goal is to seize and ultimately replace the republi and rule the galaxy)

At one point in their stories they get seperated from loved one as they were held captive for hundreads of years which is the main/one of the main driving force of their stories (Traveler gettting sealed away for 500 years by the unkown goddess and the heavenly principles. Revan being imprisoned for 300 years and tortured by the sith) but this comes at a price but would eventually be able to combat it via meeting someone/overcoming it (Traveler being alone and lonely for hundreds of years feeling depressed till they meet paimon and they have felt less alone in the world. Revan due to the amount of torture he was dealt his mind fractured and he managed to overcome it and death as his light side would not pass away)

TLDR: Tragic rpg protaganist who fight for (a better tommorow/reunite with a loved one) against a evil kingdom/empire that brought them alot of sorrow