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"Well, as an older mentor figure, the most likely scenario is that I'd return only to be randomly killed by an enemy of yours so that you can cradle my dying body while swearing revenge — so don't take it personally if I say that I sincerely hope we never cross paths again."
— Julio Scoundrél, The Order of the Stick(He comes back to rescue the heroes and manages not to die in the process.)
Shion, Aya's primary mentor in the Weiß Kreuz Radio Drama Endless Rain, serves the role of The Obi-Wan including his death protecting Aya during a mission gone wrong... but in the subsequent Radio DramaDramatic Precious, it turns out he'd faked his death and has become a Nietzsche WannabeBig Bad.
Kikyou from Endless Rain also qualifies as The Obi-Wan for Aya, down to playing Spirit Advisor in Aya's dreams following his death... which was at Aya's hands, Kikyou also having performed a Face-Heel Turn and gone Ax-Crazy. His visitations in Aya's dreams tend to involve him expressing pleasure that Aya is becoming like him and will be joining him in Hell.
Joseph Joestar serves this role in Stardust Crusaders to the rest of the protagonists. He is killed by Dio Brando in the final fight, but is revived by the Speedwagon Foundation medics.
Gennai from Digimon Adventure acts as the mentor and Mr. Exposition. In his younger days (and post-revitalization in Digimon Adventure 02), Gennai also bears a striking resemblance to Obi-Wan Kenobi in Episode I. Young Gennai's robes are quite like that of a Jedi, to the point of he and his people being referred to by the fandom as the Jedi Knights.
Also in Digimon Adventure, but to a limited extent, Wizardmon plays the Obi-Wan. It's his friendship and wisdom that results in Gatomon's Heel-Face Turn. Oh, and then he dies. And comes back as a spirit in Season 2 to warn the protagonists.
The ThirdHokage, Hiruzen Sarutobi, one of the more notable elders in his village (and in anime in general). He even dies at the hands of his renegade student Orochimaru.
We also have Jiraya; after he dies, Naruto goes to learn under his teacher, a frog, to become as powerful as him.
Kakashi himself is evolving into The Obi-Wan in his own way. Ironically, he's actually doing less mentoring than he used to, but events in Shippuuden have actually placed him in almost the exact same position as none other than Obi-Wan Kenobi himself in Episode 3, in regards to Sasuke. So he's being less the trope, and more the Obi-Wan. Bonus points for technically being killed off during the Pain arc (he even met his dead father in the afterlife!), only to recover after Pain's sacrifice.
It gets even better during the World War. As the relationship between him and Obito is starting to shape up exactly like Obi-Wan and Anakin, he is the Obi-Wan of the series.
Miyu (and later Mai) from Mai-Otome serve as Obi-Wans to Arika, but both characters ultimately survive.
Kaito briefly acts as one in the first chapter/episode of Hunter × Hunter, then fully endorses this role at the beginning of the Chimera Ant Arc, biting it about halfway.
Meta Knight more or less takes this role in the Kirby anime, among with a number of other repurposed characters. Although he doesn't seem to have died yet, he's made the odd non-fatal Heroic Sacrifice for Kirby's sake.
Sword Saint Shiba of Rave Master passes the titular role to Haru Glory and sends Haru to the man best suited to repairing the Rave Master's blade after it's broken. True to trope, he experiences an Obi-Wan Moment upon his reunion with Haru. It's a variation in that Shiba dies by challenging Haru to a duel to the death. Haru didn't directly kill him. The potion he took to restore his youth for the fight did.
Also inverted during a Time Travel arc, in which Haru saves his mentor in his youth, passing on several things Shiba would later go on to teach him
Subverted with Hiko Seijuro, Kenshin's master in Rurouni Kenshin: he fully expects to die at Kenshin's hand after passing on the succession technique, but Kenshin's reverse blade sword saves his life. Hiko then goes on to pull a Big Damn Heroes moment later in the arc, arriving in the nick of time to save Kenshin's protege Yahiko from being killed.
Mentor? Check. The most best hitman in the world but does nothing except shoot the protagonist in the head? Checked. Mr. Exposition? Check. Dies? Yes, in the future. Reborn, the home tutor of the protagonist in Katekyo Hitman Reborn! looks awfully like one (though his size is much closer to Yoda).
Shouyou-sensei in Gintama taught Gintoki, Katsura and Takasugi as children. They had extremely different reactions to his death, though.
Arguably, Death Note's Soichiro Yagami is this for Touta Matsuda.
Genkai from YuYu Hakusho plays this to the letter. Yusuke even remarks that she is the only person who ever taught him something worthwhile. Except she never seems to stay very dead, or stop working even.
In the manga, she dies at the start of the last chapter, apparently of old age.
Father Remington from Chrono Crusade, who (once he's finished training Rosette) is so determined to make sure that Rosette does things on her own power that he purposefully keeps it a secret from her when they happen to be traveling to the same city, for fear she'll depend on him too much if she knew he was around. However, when she gets in a bind he shows up to be a Big Damn Hero.
Piccolo plays this somewhat in the first arc where he decides to train Gohan, not only to get him ready for the Saiyans who were coming, but also because he sensed his death is near and wants someone to pass on his knowledge to. He's brought Back from the Dead.
In Trunks' timeline, Gohan fill this role to a T. He trains Trunks, and dies fighting the Androids, which causes Trunks to first go Super Saiyan.
Katsuhito mostly fits this trope in Tenchi Universe, although he winds up only badly injured rather than dead.
With the exception that he merely makes his swords and doesn't train him in using them, since he's a blacksmith, and he doesn't travel along with him, this is Godo from Berserk and how he acts toward Guts. He lets Guts stay with him for a year to train, gives him all sorts of neat weapons and equipment, and gives him plenty of insight on personal ambitions and life in his own way. He's the only guy that actually manages to make Guts shut up and think about his actions for once and puts him in his place, something that the Skull Knight can't even succeed in doing. This is one of his last great feats before he dies of old age, something that he is well aware of. He lampshaded this when Guts comes back to his house for the first time in two years to check on Casca. Because of all of this, Godo's in Cool Old Guy territory.
Rynith was specifically created by Precia to be this for Fate, complete with her contract expiring together with her life once she's finished training Fate. When a pseudo-revived version of hers appeared in The Gears of Destiny, she showed just how much more skilled she was compared to Fate, beating everyone she met from Nanoha, to Signum, to Reinforce (albeit a weakened one) despite not taking the fights too seriously, and eventually being the only one capable of defeating a similarly pseudo-revived version of Precia.
Ironically, also ends with Shinn losing his limbs in a fight with Athrun. Well, his Gundam's limbs anyways.
Clef of Magic Knight Rayearth gives the girls magic power and instructs them on its use, but leaves them to complete their journey on their own except when he is speaking to them remotely through Mokona. The anime has him Taken for Granite in the first episode and eventually become unable to communicate. He gets better in the second half.
There was a mysterious old man in Destroy And Revolution where Makoto had learned about the One-ness and disappeared. He was alone and had no friends or family. No one, not even Makoto knows his name.
Daredevil has Stick, the streetwise pool shark/sensei who trained him.
When composing the song "Son of Man" for Disney's Tarzan, Phil Collins said that he thought of Tarzan's (human, birth) father watching over him as if he were Obi-Wan and the song was about all the things Lord Greystoke (that's his name in Burroughs's books) would've liked to say to him.
The Lion King: Mufasa to his son Simba, as he teaches him to become king.
In Kung Fu Panda, Master Oogway fills this character trope, being the Old Master to Shifu. He seems addle-minded until he dies, but the heroes realize at the end he knew exactly what he was doing. Afterwards, Shifu takes Oogway's place and plays the role of the Old Master to Po.
Doc Hudson hates Lightning in Pixar's Cars. However, Lightning discovers that Doc was a famous and successful race car in his day. After teaching lessons in driving and humility, Doc eventually becomes his racing coach and helps him in the final race.
The prequels give us Qui-Gon Jinn, who was, ironically, The Obi-Wan to Obi-Wan himself. As well, Qui-Gon was exactly this to 9-year-old Anakin. He has a voice cameo in Episode II and it's referenced directly in Episode III that he has apparently become an Obi-Wan-like Spirit Advisor to Yoda.
Played straight in Flyboys with Cassidy, whose only real purpose is to mentor the main character, and later give him something to avenge. Bonus points for being killed by a Darth Vader-like character, complete with black airplane and ominous music. More points for crashing into a giant Zeppelin, which can be interpreted as a WWI-era Death Star.
Rufus in Bill And Ted's Excellent Adventure guides Bill and Ted while they navigate through history.
In The Matrix trilogy, Morpheus in most respects fills the role of the Obi-Wan but is the only one of the three regulars to survive to the end. He tries to sacrifice himself for Neo as early as the first film, but gets rescued.
The Godfather: Vito Corleone is a type of Obi-Wan to his son Michael.
An interesting variation of this occurs in Men of Honor. The racist Bill Sunday (Robert De Niro) makes Carl Brashear's (Cuba Gooding Jr.) life miserable but still guides him in his quest to be a Navy diver. He even coaches Brashear personally when he's disabled and must re-hab in order to continue. He also plays a huge part in Brashear's CMOA.
Mainline, future Spock plays this role to a young Kirk and to this Universe's version of himself. Which is amazingly cool because it's... you know... really him. "Spock Prime" is played by the original Spock himself.
Also Captain Pike plays this role, encouraging Kirk to join Starfleet.
In Judge Dredd, Chief Justice Fargo has most of the qualities of The Obi-Wan (mentors Dredd, dies partway in to give him a motive for revenge, provides Exposition, etc.).
In Serenity (and to a lesser extant in Firefly), Shepherd Book is this trope to the letter for our Big Damn Heroes, and he appropriately dies for his troubles.
Whistler from the Blade films. When we see them in the timeframe of the movie Blade was far more powerful than Whistler but their history clearly states this type of relationship between them.
In The Men Who Stare at Goats, Lyn Cassady, a self-proclaimed Jedi played by George Clooney, acts as The Obi-Wan to Bob Wilton, played by Ewan MacGregor who was Obi-Wan in the Star Wars prequels.
Chubbs from Happy Gilmore is a comedic but very straight version of this trope. He helps Happy get his start in golf, teaches him the basic techniques, tries to teach Happy maturity, dies, then puts in a kinda-sorta appearance as a Spirit Advisor. Also, the fact that he's not The Hero is better justified than in many stories: he may know the game and techniques much better than Happy, but in golf being one-handed is a major handicap.
Timothy Spall's character (a mentor to Mark Wahlberg) in Rock Star. On the DVD commentary (Word of God), the director describes him as "a demented Obi-Wan Kenobi."
Dr. Abraham Erskine in Captain America: The First Avenger, who advises and encourages the young weakling Steve Rogers in his efforts to be heroic because he hopes to turn him into a super-soldier. Moments after Steve gets his powers, Dr. Erskine is shot by assassins. As he dies, he points to Steve's heart as a final reminder that he must act the way he always did, despite his new abilities.
Yinsen in Iron Man is an interesting example as he acts more as Tony Stark's conscience during Tony's captivity in Afghanistan and inspires him to become a better person. Naturally he dies protecting Tony during their escape and tells him to not waste his life as he did before, setting Tony on his path to becoming a hero.
Dr. Gillespie is this initially in the Dr. Kildare series of films, as Kildare's crusty bit wise mentor who is dying of a then-uncurable disease. But that subplot was dropped over time, and the last few films in the series were renamed after him because Dr. Kildare's actor left.
In Django Unchained, Dr. King Schultz plays with this trope. He serves as a mentor to Django and indeed dies so that Django can finish his quest on his own; but Schultz's death is ultimately senseless, caused by his own ego, and ends up putting Django and Broomhilda in mortal danger.
It doesn't get much more obvious than the character of Mentor on the Filmation live-action Shazam! series, though "the Elders" (Solomon, Hercules, Atlas, Zeus, Achilles, and Mercury) also acted in this role to a lesser extent. In the comics, however, the role is filled by the wizard Shazam (who dies right after giving Billy his powers, but whose spirit can be summoned by lighting a brazier at the Rock of Eternity), except for an era of the comic where it was deliberately imitating the television show, and Uncle Dudley, normally a lazy and incompetent bumbler, became Mentor.
A possible Obi-Wan on TV would be Methos. He was certainly smarter and more experienced than the hero, though not stronger or faster, and usually dispensed various bits of wisdom. He was somewhat odd in that he didn't appear until several years into the series, but he definitely served an Obi-Wan function once he appeared. His character was added to the show not long after Darius, a more traditional Obi-Wan, was killed off.
Duncan had a number of Obi-Wans, starting with Connor himself.
For most of Happy Days' (literal) pre-Shark Jump episodes, The Fonz was The Obi-Wan to Richie Cunningham and the gang.
Godbold, the wise old hermit reincarnated as a plumber is Adam's Obi-Wan in The Wanderer. In addition to being the only one who seems to understand what's going on he is a mean wrestler. But he doesn't die.
John Winchester (the father) to his sons the Winchester Brothers on Supernatural. We never see him training them, but we know that he taught them everything they know about hunting.
Bobby Singer fills this role after John dies for several seasons until Bobby dies, and continues to guide Sam and Dean from the afterlife until they put him to rest.
A recurring gag on Top Gear is to send presenter James May (alias "Captain Slow") out to learn how to drive properly. Thus far he's been the student of racing legends Jackie Stewart and Mika Häkkinen. May explicitly compares each of them to Yoda at one point in the segment.
In LOST, John Locke winds up filling this position to Jack Shephard, though it's only really obvious in hindsight, and Locke spent most of his time on the show believing that he was the hero of the story. He doesn't depart skills to Jack so much as the idea of having faith in the Island and trusting that they all have a special purpose for being there. It takes Locke's death for Jack to realise he was right; afterwards, Jack becomes a "man of faith", really ascends to the role of The Hero, and fights in Locke's name. Crowning moments of awesome ensue.
Carter Hall/Hawkman plays this role in Smallville. As one of the last surviving members of the previous generation of superheroes, he becomes a mentor to the current generation of superheroes, most notably Clark Kent. In the show's tenth season, Carter informs Clark that he has fought against and defeated that season's Big Bad Darkseid on at least two previous occasions, but is then killed in battle by another villain who had unknowingly become a minion of Darkseid later in that very same episode.
Chin often plays this role to his cousin Kono in the new Hawaii Five-0. Suitable since he's an experienced if disgraced cop, and she is just coming up to graduation to the HPD at the start of the series.
In The Big Bang Theory, the recently deceased Professor Proton is not ecstatic at all about returning to act as Sheldon Cooper's literal Obi-Wan. Especially when he realises he is dressed for the part, has to have the character explained to him, and realises that note in what may be one of Sheldon's dream sequences, but this is left nicely ambiguous he is now Sheldon's spiritual advisor. he does find the light-sabre to be cool, though.
Polk the teamster, in the novels White Plume Mountain, Descent Into The Depths Of The Earth, and Queen Of The Demonweb Pits is both a literary example and a rare subversion of the trope — a drunken porter who follows the grim, hardened Justicar around under the delusion that he can pass on the wisdom of the ages. He dies in the second book — not making a heroic last stand, but reloading the crossbow for the character who is — and is promptly reincarnated as a badger, his ego even further inflated by the experience.
Harry Potter: Dumbledore, the wise wizard who usually dispenses a few pieces of advice just before the hero needs it, then shows up in the epilogue to tie up any loose ends. This has started to be called the "Dumbledore Explains It All" scene. Dumbledore dies at the end of book six in a seven-book series, leaving one final story for the hero to avenge his death. In Deathly Hallows, Dumbledore gets to explain it all one last time, as he and Harry have a chat in an afterlife train station. Talk about sticking to the trope.
In Christopher Paolini's Inheritance Cycle, Brom (an obvious clone of Obi-Wan Kenobi) fills this role until his death midway through Eragon; in Eldest, Oromis takes over the role. Oromis might be more The Obi-Wan than Brom was, since he got killed by The Dragon to the Big Bad at the end of the third book. A memory of Brom turns up late in Brisingr, which would send him straight back to the Obi-Wan territory if he ever left it.
He was himself mentored by the forest-dwelling feeble former warrior Oromis.
The Pendragon Adventure by DJ MacHale has Uncle Press, who is very much The Obi-Wan. He is the mentor to the main character, Bobby Pendragon, and teaches almost all the other Travelers of the generation. He appears to be one of the few travelers who regularly traveled before Bobby's time, and dies at the hands of the Big Bad.
Snufkin from The Moomins, though he doesn't die he is the definition of understated.
The old priest in Nation. Defied by the fact that the young hero, Mau, doesn't want to hear a damn thing he has to say — in the wake of the tsunami that devastates their area of the Great Pelagic Ocean, the old priest is clinging to his faith, while Mau violently rejects it... despite being continually harassed by the spirits of his ancestors and Locaha, the god of death. Played straight, though, in that he helps Mau become the leader the refugees desperately need, and is killed at the end of the second act.
There is also Nawi, the old man who teaches Mau (among other things) how to scare off sharks.
Tirandys in P.C. Hodgell's Chronicles of the Kencyrath is The Obi-Wan for Jame, and dies tragically at the end of Book 2, Dark of the Moon. A variation in that he's The Dragon's man and was supposed to raise Jame up to be a good evil minion.
In Time Riders, Foster is a mentor to the team and is constantly helping them, although he appears less and less until City of Shadows, when he dies, but not before giving Maddy a crucial clue to the Agency's true nature.
Bluestar of Warrior Cats is a female version for the first two books, before going into a Heroic BSOD and finally dying. Then she continues giving advice from the afterlife.
Kelsier in Brandon Sanderson's Mistborn plays this trope completely straight.
DCI Nightingale in Rivers of London is an example of The Obi-Wan who doesn't die, although his near fatal shooting serves the same function in forcing inexperienced DC Grant to go it alone and realise his own potential. He gets better by the end of the book, after the Big Bad has been defeated.
Henry Sturges, the ethical vampire who teaches Abe his vocation, fills this role in Abraham Lincoln: Vampire Hunter. Unusually, not only does Henry not die, he eventually turns Abe into a fellow-vampire, and the two are fighting evil blood-suckers to this day.
Moirane Damodred Sedai mentors all the Two Rivers youths, Rand in particular, and "dies" protecting him from Lanfear as a result. Predictably, she comes back in a weaker form in Towers of Midnight.
Thom Merrilin to Mat Cauthon and Rand Al'Thor. He helps them escape from Trollocs and is the reason they survive "in the real world." He then "sacrifices" himself by battling a Fade, giving them time to escape. He even gives Rand some knowledge about Aes Sedai and channelers later on and gives Mat a great deal of mentoring from the time of the Band onward.
Elyas Machera to Perrin Aybara. He even has the "hermit" characteristic, seeing as how he freaking lives and speaks with wolves. He mentors Aybara in coming to terms with being a Wolfbrother and in using his abilities.
Tam Al'Thor could also be considered The Obi Wan for Rand Al'Thor (he sure seems to burn through them fast, doesn't he?). He raises him, gets incapacitated after giving Rand his lightsab- oops! I mean, magically conjured sword that is hard enough to cut everything, and was a big-timer in the Grand Army of the Rep- I mean, Illian's Companions during the Clon- I mean, the Aiel War. And he comes back later on to advise both Perrin and Rand.
Blackstone, from Wearing the Cape and Villains Inc., was a retired US Marine when he had his breakthrough and became one of the founders of the Sentinels. Ten years later, as the last surviving and active Sentinel of the original five, he is both the spiritual mentor to the newer Sentinels and the team leader.
Vatra and Noble provide this role in Of Fear and Faith, mentoring the group and helping them out in certain situations, on top of dragging them all along on their epic journey to begin with. Neither of them have died so far though.
Fraa Orolo to the young Edharians, particularly Fraa Erasmas, in Anathem. They even call him "Pa" sometimes.
The Turaga elders from BIONICLE mostly stayed in their villages, but they occasionally guided the Toa on short quests, like Turaga Whenua helping Onua search for his Nuva masks. Turaga Lhikan is the "straightest" example, having spent the entirety of his short time as a Turaga mentoring and traveling with new Toa, and finally Taking the Bullet for Vakama, delivering a last mentor speech with his last words. Then again, he might still be alive at the Respawn Point. During the Toa's mutation into half-beasts, the six Rahaga also take up this role.
Saint John the Baptist takes this role in Christianity (and to a lesser extend, Islam). He is an itinerant preacher who baptizes Jesus and is ultimately put to death by the Romans.
At EPCOT, Dreamfinder from Journey into Imagination was somewhere between this and the Eccentric Mentor before he was removed from the ride.
Landon Ricketts from Red Dead Redemption is a near perfect example. He's a crotchety old gunslinger living out in the middle of the desert who teaches John Marsten the final level of his Dead Eye ability which borders on jedi powers anyways.
Dr. Light to X in the Mega Man X games (amusingly enough, he's got the whole "force ghost" thing happening via hologram messages). Zero acted like this until X became more of an equal, and it came full circle in the Zero series, where X is Zero's Obi-Wan.
Auron from Final Fantasy X may qualify, since his dispensing of advice is his whole purpose in the party. He's been there, done that, and now he's back to make sure Tidus and Yuna save the world properly, when Auron and their fathers couldn't. Being the only known survivor of a successful pilgrimage, he certainly counts as experienced, his superior badassery over the hero and others is plain, and he definitely fits the bill of a spirit guide, since he's been dead for ten years already when the story begins.
Peppy from Star Fox, as he is stated to be the oldest one on the team, was a member of the original Star Fox crew with Fox's father and also acts somewhat as a mediator between the more hot-headed Falco and the other teammates.
To a lesser extent, Wolf in Star Fox Assault somewhat plays this role. He gave a life-saving advice to Fox which actually snaps Fox out of his troubles in the final mission, and Star Wolf sacrificed themselves to let Star Fox move on. Wolf only does this because he is the only one allowed to defeat Fox.
Uther the Lightbringer from Warcraft III, right up until his protégé kills him. Kel'thuzad might also count as Arthas' Obi-Wan in the Undead campaign.
The first Knights of the Old Republic has Jolee Bindo, a wise and seasoned former Jedi (and a hermit, to boot) who left the order because he found its refusal to acknowledge love's influence in a Jedi's life. It's never made clear just how much of Jolee's Grumpy Old Man routine is really an act, but he is shown to be the wisest follower you meet. He even figures out, on his own, that the protagonist is actually the amnesiac former Sith Lord, Darth Revan. He just doesn't think it's his right to say it.
Knights of the Old Republic II puts your character, a Jedi exile severed from the Force and rediscovering his/her power, in the hands of Kreia, a mysterious Force-user who's apparently neither Jedi nor Sith. She's a considerable subversion of the trope however: although she genuinely grows to love you, she also lies to you constantly, manipulating you (and everybody else) to achieve her Machiavellian purposes. Eventually, she reveals herself as the Big Bad, forcing you to take her down yourself.
The player character him/herself can actually be this as well. There are a handful of party members whom the Exile can train in the ways of the Force. It's most noticeable with Handmaiden, since Atris herself will call Handmaiden out on jumping ship from Atris's mentorship to the Exile's, and in cut content where Handmaiden has to fight her fellow sisters, she remembers the lessons she learned from sparring with the Exile in order to win.
When one thinks Mentors from Pokémon, the Profs spring to mind. But a better example is Cynthia, the Champion from the Sinnoh games. Aside from acting as a local Deus ex Machina, she seems to have to taken a shine to you, and supplies you with hints and helpful MacGuffins and Plot Coupons. In Platinum, this becomes very pronounced when you go into the Distortion World with her. Unlike the darker examples of this trope, where the Hero kills The Obi-Wan, when you defeat her at the end of the game, she says she's proud of you. This is Pokemon, after all.
Duncan in Dragon Age acts as Alistair's Obi-Wan; having been his Senior in the Grey Wardens and a surrogate father figure for months by the time you meet him in your Origin Story. Duncan's involvement with the player character is arguably too limited for him to count as his/her Obi-Wan too, though he does save your ass in each of the Origin Stories. He has an Obi-Wan Moment in the disastrous Battle of Ostagar, however, they Never Found the Body.
According to the toolset, it at least tries to make Duncan seem like a mentor figure to the player, as that's his character description.
In Dragon Age II, despite having been deceased for several years prior the start of the game, Malcolm Hawke is frequently referred to as being this to a Mage!Hawke and Bethany. Despite giving up his magic when he married Leandra, when he discovered that his children possessed his gifts, he immediately set about teaching them to hone their abilities and how to blend in, so they could keep their magic a secret from the Templars.
The Legacy DLC shows that 20 years ago, he was such a badass, even the Grey Wardens came seeking his help.
Keeper Marethari serves as this to Merrill, having trained her to eventually succeed her in leading their Dalish Clan. Even though Merrill enters a self-imposed exile, Marethari still offers her advice to her and relies on Hawke to curb her growing obsession with the Eluvian.
A villainous example occurs with Flemeth arguably serving as this to Hawke. The game begins with her rescuing Hawke and company from the Darkspawn, offering to lead their family safely through the horde in exchange for a favour. It's later revealed that she kept a fragment of her soul in the locket she gave Hawke, having prepared for her possible death at the hands of the Warden in the first game. Once resurrected, she thanks Hawke and stops to offer them some cryptic advice, before turning into a Dragon and flying away.
Just to further drive the Star WarsMark Hamill irony home, Master Eraqus is struck down by a former pupil who, thanks to an Evil Mentor, has embraced The Dark Side - though it's the evil mentor himself who strikes the killing blow, revealing his true colors to the pupil.
Kamorage of Vanguard Bandits is this. Being older, and more skilled than the rest of your party. He also happens to be the main character's father. Or not.
Anderson in Mass Effect. He is revealed to have been considered for the post of first Human Spectre, but Saren sabotaged the mission that was meant to decide this. It took 20 years until Anderson's protege, Shepard, eventually rose to become humanity's first Spectre.
Falagar (the Warlock) serves this role in Might and Magic VI... from the intro and up to just before the game actually starts (there is a gap of a few years there). He doesn't die, but sticks to New Sorpigal and advice-giving after training the player characters.
Mia Fey from Ace Attorney is a rare female example. She dies in the second case of the first game, only to return as a spirit, channeled by either Maya or Pearl, who gives advice in later chapters and installments.
Becca Stone, in the Whateley Universe, is summoned by the Tao to come to Whateley Academy and teach Bladedancer how to become one with the Tao. Becca doesn't fight, though: she's way over a hundred and was trained as a nurse back when she was a normal human.
Batman Beyond: In the future, Batman, the ultimate badass (and still an elder badass if forced by circumstances), became an Obi-Wan to a new younger Batman, giving advice by radio.
Master Splinter, of the various Teenage Mutant Ninja Turtles incarnations, is very much The Obi-Wan (though he nearly always survives the experience).
Grandpa Max, in Ben 10, was a Man in Black when he was younger, and retired to have some peace and quiet, spend time with his grandkids... Once the Imported Alien Phlebotinum the show revolves around latches onto his grandson's wrist, Max's experience is invaluable (especially since the sender intended it to go to Max in the first place). Alien Force has Max go to The Obi-Wan's inevitable fate.
Uncle Iroh also counts. He is a mentor to Prince Zuko and not only helps to protect him, but also helps him in his destiny to side with Aang to stop the Fire Nation's conquests. Interestingly, he is also the Obi-Wan to Zuko's Anakin Skywalker.