From reading the Saber Forum website, this had brought me attention there are many Star Wars EU characters to find someone absolutely interesting in the expanded universe, not just the legends universe, but most of them are considered non-canonical.
These are the list to go through, so (men) you can go and check them out:
Darth Zannah: There are tributes of her, when you read the three Darth Bane Trilogy books, the first one “Path of Destruction (Sept 26, 2006)”, the second book “Rule of Two (Oct 28, 2008) and the third book covers the details of “Dynasty of Evil ( Dec 8, 2009).” Both Darth Bane and Zannah form an very good ally with each other and the time of disappearance was also extremely mysterious to the Galactic Alliance and the galaxy at large during Old Republic and Rise of the Empire era.
Satine Kryze was determined to save the Mandalorians world with the guidance of both Obi-Wan Kenobi and Qui-Gon Jinn to protected the young Duchess from her many enemies. Duchess Satine are considered as both canonical and non-canonical from The Clone Wars 2008 TV series edition, when Walt Disney took over the LucasFilm Ltd. franchise and declared Star Wars expanded universe as legend universe. When George Lucas had to leave out of Lucasfilm industry, the story of Star Wars: The Clone Wars ever to work with and Disney had complete control to take over the film. The Mandalores are seized by Darth Maul to put the Death Watch in power and possession. When Kenobi came to rescue Kryze from imprisonment in her own royal palace, Darth Maul murdered her before Kenobi’s eyes as retribution for his previous bisection of Maul. Kryze used her final breaths to reaffirm her decades-old love for Kenobi before passing on.
Siri Tachi was another close affiliation with Obi-Wan Kenobi during Clone Wars era. The appearance of Siri Tachi was technically introduced from Star Wars: Jedi Apprentice novels written by Jude Watson during the Rise of Empire and Crisis of the Republic era. Obi-Wan Kenobi had an former greater attachment relationship with his feelings for Siri Tachi than what I have much expected than with the Duchess Satine. Both of them I think that Obi-Wan had develop stronger ties with Siri Tachi. Just like in The Clone Wars, Siri Tachi died during that era. The memory of a dedicated Jedi and dear friend lived on with Kenobi and he continued to miss her just as constantly and intently as he went into exile to watch over young Luke Skywalker on Tatooine following the Great Jedi Purge.
Juno Eclipse served the Galactic Empire as an Imperial officer for Galen Marek and as pilot on the Rogue Shadow during the time between Star Wars Episode III: Revenge of the Sith and Star Wars Episode IV: A New Hope. To find and follow her tributes within those dark era of Empire Triumphant, refer to the video game Star Wars: The Force Unleashed. In this Star Wars video game, Juno Eclipse was very much of an technical commander towards Galen Marek (Starkiller) an secret apprentice of Darth Vader to guide the mission destiny to save the founders of Rebel Alliance. Because Galen Marek wanted to find out more truth of his dead father that Darth Vader had threatened. During Juno Eclipse and Galen Marek’s journey, she later was held in hostage on Kamino of the Empire criminal towards Darth Vader and was concealed away from Galen Marek’s feelings of love. By 6 ABY, two years after the Galactic Empire had defeated by the Rebel Alliance declared the formation of the New Republic in accordance with its primary objective to restore the democracy that had been supplanted by the New Order. Admiral Ackbar credited Juno Eclipse for not only ensuring the Rebel Alliance’s survival, but also for contributing to its growth as well.
Tahiri Veila is an Jedi Knight to serve and establish the New Jedi Order characters that was born on 13 years ABY. In fact she should be part of making the Star Wars sequel trilogy for Episode VII, VIII and IX. When Tahiri was 9 years old, she formed a friendship with a fellow of Jedi Initiator named Anakin Solo who was a grandson of the Jedi Chosen one Anakin Skywalker, also remembered as the Sith Lord Darth Vader. After when she dated Anakin Solo for 5 years, when she witness that he was dead after the event of mission to Mrykr. When she suffers from an emotional pain due to her loss of Anakin Solo her Vong-implanted personality Riina Kwaad resurfaced and attempted to control Tahiri’s mind. During the second galactic civil war, Tahiri joined Darth Caedus side formerly as Jacen Solo. Then she was turned to the dark side of the force through the Darth Caedus promise of revisiting the late Solo from the past via an ancient technique called Flow-walking. Darth Caedus remain loyal to the Sith Empire, however Jaina Solo hated her brother psychologically and physically to defeat him. After when Darth Caedus was defeated, Tahiri Veila service to the Empire was very brief, while ultimately leading to her return to the ranks of the Jedi Order during their conflict with the Lost Tribe of the Sith and the force entity to defeat known as Abeloth.
Lana Beniko are currently the new companions of Star Wars The Old Republic: Knight of the Fallen Empire video games, if you wanted to team up with the Sith Empire on many other allies. She is one of the apprentice served as a key advisor to Dark Council member for Darth Arkous. Darth Marr appointed Lana Beniko as the new head of reformed Sith Intelligence. “Destiny do not choose between good and evil… it does not honor the light… it does not judge the darkness!” Lana Beniko and several other’s at her side went on for the mission to search for the Outlander, because the purpose of this game is to join or accept Outlander’s team to defeat or remove any significant representative of Eternal Empire.
Hermione Bagwa works at Dexter’s Dining for Jettster on Coruscant core worlds. She duels with WA-7 for mastery of the dining room. Each is convinced that she has the superior position. Hermione grew up from the Coruscant underlevels and feels very fortunate to work on the skyscraper landscape. When the rise of Galactic Empire Jettster became one of the Erased, eliminating records of his existence so as to not be prosecuted by the Empire for treason and was destroyed. Then Dex Jettster had to move underground and later throughout the Galactic Civil War it was run back and repaired by Hermione. Much about her early life came from Coruscant underworld high poverty situations and it was not until during teenager when Hermione first meet Dexter Jettster and become loyal to become an head waitress for the Dex Dining bar. Considered as both Star Wars legends and canon, despite she only have very short screen time on the Star Wars Episode II: Attack of the Clones film. There are more information about her from Star Wars expanded universe what are known as Legend universe citation than coming from official canon.
Iella Wessiri Antilles was an Corellian female, who served as a CorSec agent and have strong affiliation with the canonized character Wedge Antilles. Iella went on her career and become one of the members of New Republic Intelligence. She helped joining the Alliance to Restore the Republic during Bacta War and Second Galactic Civil War. As an Corellian security officer, Iella operates primary law enforcement agency for the planet of Corellia. During her age of retirement for the Rebel Alliance, she and Wedge Antilles begins to follow her daughter footstep Myri as an intelligence agent.
Guri was an human replica droid that was born from the laboratory and served perfectly as assassinator serving for the Black Sun leader Prince Lord Xizor. There are several tribute of Guri in almost several of Star Wars expanded universe games and books for “Shadows of the Empire.” The Black Sun tradition held a massive amount of reach and influence, extending its tendrils of corruption deep in the various galactic governments of each era. It was infamous for their own anticipation in piracy and smuggling. But smuggling was just the tip of the iceberg of the galaxy-wide organization of the Underworld. Prince Lord Xizor was ruthless competitor and charismatic public figure in high society with his headquarters on planet Coruscant. After the fall of Black Sun and the death of Lord Xizor, Guri had to set out on a personal quest to locate Thrumble and get him to purge her assassin programming so she could start a new life and was successfully being reprogrammed later on her legacy. Guri then teamed up with Dash Rendar, working together as a mercenaries before they have to agreed serving the template for a new range of human replica droids later on.
Morrigan Corde became one of Kol Skywalker husband who is a member of the Jedi Council representative. The pair fell in love, married and had a son Cade Skywalker. Even though Cade Skywalker was also a direct descendant of both Luke Skywalker and Anakin Skywalker and a possible grandson of Ben Skywalker during the prime time of Star Wars expanded universe theory. During the mid-life crisis Morrigan Corde lost her son and have been trying to rescue Cade Skywalker from Calixte, in Darth Maladi’s laboratory during the interrogation of Hosk Trey’lis. Throughout much of Cade Skywalker’s life is part time as being pirate, smuggler and Jedi Knight during the Legacy era 130 ABY. To ensure the Dark Lord of the Sith would never return, Cade took his mother’s ship to the mother’s ship which is the Coruscant prime, where he intended to incinerate both himself and Krayt’s body. Morrigan Corde says goodbye to Cade Skywalker when the galactic war rage was completely done. With the war over, Cade Skywalker set out for a distant place where the group could be in peace. Morrigan also gave her son the holo of their family, asking him to tell Kol or Ben Skywalker that she loved him when they met again. This was the very last day of Star Wars expanded universe ended where Cade and Ania Solo was held in place in Dark Horse comics series “Star Wars: The Very Last Stand,” which was never being told further beyond this expectation.
Here are some of the underrated Star Wars expanded universe characters that I had not mentioned from the above:
Danni Quee: http://starwars.wikia.com/wiki/Danni_Quee
Jenna Zan Arbor: http://starwars.wikia.com/wiki/Jenna_Zan_Arbor
Syal Antilles Fel: http://starwars.wikia.com/wiki/Syal_Antilles_Fel
Tallisibeth Enwandung-Esterhazy: http://starwars.wikia.com/wiki/Tallisibeth_Enwandung-Esterhazy
Princess Arianna Ad’Lah made an appearance tribute for an fan fictional film of Star Wars: Thread of Destiny. It was taken place 94 years ABY, when the New Republic has been resurrected and democracy once again presides in the galaxy. With the fall of Galactic Empire, ancient Skenvi Empire now comes out hand. In this remarkable story of Arianna, Thread of Destiny was a wonderful feature length chapter of Star Wars complete with lightsaber and many CGI concept they help to bring you: “The planet Coreign produces a special ore that can power an entire city, but the Skenvi empire is interested in its potential for supreme spaceship armor. That’s the framework though, as the actual action focuses on Skenvi’s Lord Siege’s kidnapping of Princess Arianna and the efforts of the Jedi knights to get her back.” Read for more information here at https://nordicfantasy.wordpress.com/2014/04/13/review-threads-of-destiny/
Here are others example that may not be in the ranked of Star Wars expanded universe into the books or video games:
Shaela Nuur: http://starwars.wikia.com/wiki/Shaela_Nuur
Vega Sepen http://starwars.wikia.com/wiki/Vega_Sepen
Lara Notsil http://starwars.wikia.com/wiki/Lara_Notsil
Trix Skylan http://starwars.wikia.com/wiki/Trix_Skylan
Tanda Pryl http://starwars.wikia.com/wiki/Tanda_Pryl
Maranne Darmic http://starwars.wikia.com/wiki/Maranne_Darmic
Ceta Farr http://starwars.wikia.com/wiki/Ceta_Farr
Evaan Verlaine http://starwars.wikia.com/wiki/Evaan_Verlaine#New_Republic
There’s more on the list that are also common in the Star Wars expanded universe, that I didn’t discuss further on certain characters, if you wished to discuss on this for further notice.