Bart is married to Misty Bass, and they have one son together, Chuck Bass. The Bass family is well known in the Upper East Side society and are extremely wealthy.
Season 1In season one, it is shown that Bart Bass and Lily van der Woodsen have been secretly seeing one another, but Bart is not ready to make the relationship offical and is still dating other people. Lily then decides to make him jealous and when Bart brings a model to the Waldorf party, Lily comes with her ex-boyfriend from many many years, Rufus Humphrey. They both see each other with their respective dates, but Bart isn't jealous until Rufus kisses Lily, which promopts Bart to talk to her. When they begin to date, Rufus' son Dan sees them together. Bart and his son Chuck Bass talk about how Chuck's actions affect Bart. Later, Chuck makes an offer to him about the club Victrolia, but Bart won't help Chuck since he thinks it is a club for Chuck to just do the same thing he always does. Chuck discovers that Bart and Lily are dating. Later on, he sees a woman waiting for Bart, who Chuck thinks is another model, but she really is an investor trying to help Chuck with his club after she and Bart came to Victrolia. Chuck tells his father that he told Lily about the woman he saw him with, so Bart then calls Lily to explain.In Roman Holiday, Bart is introduced to Alison, and tries to persuade Lily to make their relationship public. On Christmas Eve, he shows up at the van der Woodsen Penthouse, and proposes to Lily in front of the family. After many ups and downs, they decide to get married. Although Serena and Eric don't care for Bart or Chuck, they decide that they should support their mother. Bart keeps a file on everyone in his life and knows of Lily's relationship with Rufus but decides to marry her despite this. One other family night with Bart and Lily and their children, Serena gets a package from someone containing what looks like porn among other things Serena thought Chuck sent her. When she tells Bart about it, he sends Chuck back to his hotel until it goes away, but Serena discovers who it came from and leaves after apologizing to Chuck. Before the wedding, Bart calls Lily to an old building and reveals that it was the first one he bought and tells Lily that he should move on from it and she should do the same. At the wedding, all of their families and friends gather to see them get married. After they got married, they go to the reception where Chuck, the best man, speaks about how his father and Lily met and says that he would like to find someone he loves. Before Chuck was going to meet Blair, he was with Bart, who tells him that once he is together with Blair, he will never be same man.
Season 2Bart and Lily's relationship is rather strained in season two. After their wedding, they went on a honeymoon to Beijing. Lily came back a little before the summer ended, Bart stayed there since he had some business there. Then when Bart came home again, both Bart and Lily had some new rules for their kids, but Serena didn't believe what she was hearing and walked and talked with Eric about that, but Eric thought they should try to be nice about it. Later Chuck says that she should do what she wants instead of listening to Bart and Lily so Serena goes in a dress which is very inappropriate, and when Bart came home tiff is gay since it would be a lot of people from the media. Then when Serena was talking with the media she said how she felt when her mother had all those other husbands. She then realizes it was not Bart who came with the rules it was her mother, Lily. Serena then left and went outside and met with Dan her -boyfriend and talked with him until Bart came with his limo and got her back home and had a nice family evening for the night. When both Bart and Lily Bass were awarded at the party they were at, Jenny came with models and then it became a real party. The next day Chuck tries to get his father to join him in a hockey game which Bart liked when he was young, but he said that he does not have time for that any longer. Later Bart meets up with Dan, his step-daughters ex-boyfriend and he wanted to explore a little of Bart Bass's life which he agreed on two day a week. When Bart and Dan were finished with their appointment, Chuck came in to see his father. He was surprised to see Dan with him. Chuck says he has changed his plans and says to his father that he had already made plans. Dan leaves so Chuck and Bart can be alone. Then when Dan comes to where Bart Bass is living with his family he asks Bart if he was responsible for one of the buildings that was on fire for many years ago. Bart confirms to Dan that he is responsible for the fire in one of his building many years ago, and tells him that a secretary guard lost his life in the fire and that he has thought about that for almost 20 years. Dan then questions it, but then Chuck comes over and says to his father not to tell him anything else. Chuck then tells his father that he is running a story for a Magazine. Bart then asks Dan how much it will be going to cost for it to go away, but Dan doesn't want the money and then just leaves them alone. Then it seems like Dan gave what he knew to Bart Bass and wrote that he was sorry. Bart read it all including that Chuck thinks his father hates him for his mother's death. Bart then comes to his son and explains to him that he never really blamed Chuck for his mother's death. Bart explains to his son that it is hard because he sees her when he looks at him. He then says to Chuck that he want's to know his son and asks him if he still wants to go to the ice hockey game. Chuck replies by telling his father that he will clear his calendar and Bart smiles. Later, Bart sees Eric and asks him why he is home early , Eric replies the same. Bart then mentions in conversation to Eric that he heard about his boyfriend being with someone else. Eric asks Chuck how Bart knows so much, Chuck says that Bart normally has files on people. Bart then sees Rufus and Dan enter and asks Lily what they are doing here. Lily says she invited them and goes to talk to Rufus about Jenny. Then when Eric, Serena and Lily came down, Bart asks what was going on and so said they holding the files and then said they were heading outside as a family, without Bart and Chuck. The next day Bart comes by with his limo and says to Lily that they need to talk. Bart says he is sorry for what he did and that it is a long time since he has been a husband. He also mentions he fired Andrew his private investigator. Lily then says she has a lot to do and does not know if she can forgive him. She then walks away. Back at the Bass's, Chuck talks with his father. Bart says that every time they get along together, Chuck shows his true colors. Lily then discovers that Bart never really fired Andrew and she is now thinking of leaving him for good. Lily still has feelings for Rufus and is angry with Bart for keeping files on her family.
At the Snowflake Ball, Chuck calls his father and tells him that Lily is at the ball and is with Rufus and that he has to get there. Bart then says to Andrew that he wants to know everything about Lily. Bart dies in a car accident on his way to confront Lily about Lily and Rufus's son Scott, sending Chuck on a downward spiral.
Season 3On the anniversary of his death, Bart appears to Chuck telling him that he thinks he is weak for letting himself love Blair. While Bart is not actually there, Chuck gets angry and tells Blair to leave when she comes to tell him that he was supposed to meet her for lunch. Blair later goes to Lily to tell her of her concerns about Chuck not expressing his feelings about it being the anniversary of his death. Lily later comes to Chuck to talk him into coming with her to Bart's grave to pay his respects to his father. He refuses to go at first, saying that yellow roses were his mothers favorites and throws the flowers Lily brought him in the trash as Lily leaves. Blair later gets him to change his decision and he agrees to go visit his fathers grave. When Chuck visits his father's grave and pays his respects, he sees a woman with flowers that he first assumes is Lily. The woman turns around to look at Chuck and says " Charles", before running away, leaving Chuck confused. Chuck then finds a locket on his fathers grave that was placed next to the flowers that the woman left and he sees that the picture in the locket is a picture of his father.
Season 5In Raiders of the Lost Art, Blair Waldorf goes in a room in the mansion where they are and that is where she sees Bart Bass, Chuck's father alive. Then she taken by security to see Bart's younger brother, Jack. Blair tells Jack that he needs to tell Chuck that his father is alive, but Jack says he won't and that she almost ruined everything by being there. Blair then meets Chuck and tells him to go back to the mansion as Jack is hiding something there. Chuck then re-enters the mansion on Blair's advice to find Bart is in fact alive and living in the house, where the elite brothel operates. The car crash actually happened, and that it was ordered by one Bart's enemies so when he was in the hospital, he paid the doctor to say he died and then recruited Diana Payne to help him hide. Diana kept Bart informed of when Chuck was in trouble, so when Chuck was in the hospital, Bart donated his blood to save him. He was about to flee the country again but was delayed. Chuck then believes that they can start over again but Bart tells him that he can't, because, if the man who tried to kill him finds out he is still alive he could try to kill Bart again, or go after his son. Chuck then says to his father that they can go after him. Bart then tells Chuck while Bart is still alive everyone is in danger. And he said that he was supposed to leave tonight, but couldn't because of what Chuck and his friends had done. Bart then tells Chuck that it is wonderful to see him again and is sorry that it can't last, and that he has to go now. Then his security team shows up and escorts Chuck out of the mansion so that Bart can get ready to leave the country, and Chuck. Chuck then later tries to find out who was trying to kill his father 3 years ago and Diana told him it was Macen Nevens who was Bart's enemy in business. Later Diana calls Bart and says that he will be leaving the country today with her and then asks him if he got her check. Then when Lola and Ivy get ready for Macen Evens, Chuck's investigator comes instead and ask them to go with him as Chuck says they are in danger and need to go now. They soon realise that Chuck did not send the investigator but is some how involved in the plot.
Initially Chuck is happy to have his father back but Bart decides to make the announcement that he is in fact alive. He also announces that he is taking over as head of Bass Industries and completely casting out Chuck and Jack.
In the season finale, Bart manipulates Chuck into rejecting Blair's romance advances.
- The Wild Brunch
- Poison Ivy
- The Handmaiden's Tale
- Victor Victrola
- Roman Holiday
- School Lies
- The Blair Bitch Project
- Woman on the Verge
- Much 'I Do' About Nothing
- The Serena Also Rises
- Chuck in Real Life
- There Might be Blood
- Bonfire of the Vanity
- The Magnificent Archibalds
- It's a Wonderful Lie
- O Brother, Where Bart Thou? (voice)
- Gone Maybe Gone
- High Infidelity
- Portrait of a Lady Alexander
- Monstrous Ball
- Save the Last Chance
- It's Really Complicated
- The Revengers
- Misty Bass (wife)
- Chuck Bass (son)
- His favorite color is purple.
- He turned his first profit when he was 22.
- He used to sneak into hockey games as a kid.