Bill Spencer Jr. is a fictional character from the American CBS soap opera The Bold and the Beautiful.

Don Diamont briefly appeared on The Bold and the Beautiful's in 1993 as Brad Carlton, who crossed over from The Young and the Restless.

After his father dies, Bill receives 50 percent ownership of Spencer Publications and is named co-CEO with his sister, Karen.

He hires his father's close friend, Stephanie Forrester, to promote Jackie M Designs by writing a scandalous daily blog/webcast entitled The Logan Chronicles.

It makes Spencer Publications a lot of money and gives Stephanie her revenge on her ex-husband, Eric, and his new wife, Donna Logan.

Bill helps Donna win a percentage of the stock in the company as part of her divorce settlement with Eric and then buys it from her.

The devious schemer and gold digger, Amber Moore, pretends to sleep with an unconscious Liam at a party and then claims to be pregnant with his child.

Bill buys a beach house for Amber, but finds the perfect opportunity to be rid of her when she falls over a bannister.

Bill's marriage to Katie is further strained as she overhears him confiding in Steffy his intent to kill Amber.

Katie, however, doesn't support the marriage and is very suspicious of it because she believes that Steffy has other motives to marry Liam.

In 2012, Bill learns his sister Karen and niece Caroline, an aspiring fashion designer, are moving to Los Angeles.

Despite trying to get an annulment, Steffy refuses to cave in, stating that she would rather get a divorce, resulting in Liam and Hope being forced to wait 6 months until they can get married.

Despite Katie having come back, Bill can't seem to deny what he feels for Brooke, and they start spending more time together.

All the stress over Bill's closeness to Brooke takes its toll on Katie, and she winds up in the hospital after suffering a heart attack.

Eric declined saying he's in a relationship with Taylor (Stephanie's now deceased) but pressured Brooke into telling the truth.

Wyatt stated that his mother's a jewelry designer and Hope decided that she wanted to meet her and ask.

Hope later confided in her brother Rick about it, and believed that all the things that Quinn said about her son's father fit Bill Spencer perfectly.

Wyatt was raging and Quinn said she lied to him that his father died because she was a teenager and once she was pregnant, Bill wanted nothing to do with either of them and handed her money for an abortion.

Wyatt, still angry at his mother for lying to him, leaves and begins living in Liam's house with Bill, since Katie kicked him out.

Katie then put in another spy camera, placing a bottle of alcohol on the table and asks both Brooke and Bill to babysit Will again.

Afterwards Katie calls Brooke to her office to tell her she's leaving town with Will for good, but she'll still run Spencer Publications.

Bill then moves in with Brooke and proposes to her, stating that she was the first woman not to be afraid of him and that he had been waiting his entire life for her.

Returning to Los Angeles, Bill ends it with Brooke and wants his family back with Katie.

Brooke then throws Bill out and refuses to forgive him, claiming that when he broke her heart it gave her the strength to finally let go.

Brooke, though very much in love with Bill refuses to take him back hoping to mend her relationship with Katie.

He was a real man and decisive unlike Ridge who was weak and would hurt her again and run when things got tough.

Brooke then thinks it is cute that Katie has this "crush" but gets furious when Ridge claims they have true feelings.

In 2020, Candace Young from Soaps She Knows put Bill on her list of the hottest soap opera villains, saying that "'Dollar' Bill Spencer may be known for his plotting and controlling behavior, and he has ruined dreams and even attempted murder, but he remains a stylish piece of eye-candy.

"[4] In 2022, Charlie Mason from Soaps She Knows placed Bill 6th on his ranked list of The Bold and the Beautiful's Best of the Best Characters Ever, commenting that "The Young and the Restless' loss was most definitely The Bold and the Beautiful's gain when Don Diamont was killed off as Brad, thus freeing him up to bring to life a playboy who's since become one of soapdom's most infamous.

"[6] Jack Phillips from The List believed that Bill being surprisingly understanding of Karen's coming out and relationship with Danielle Spencer (Crystal Chappell) marked "a significant evolution in his character".