Born on-screen June 22, 2004
Helped to select interns at Forrester Creations
The Logan Mansion (200 N. Beston Place)
Formerly a boarding school in Ojai, California
Formerly a boarding school in Europe
Ridge Forrester Sr. (father)
Brooke Logan (mother)
Massimo Marone IV (grandfather)
Stephanie Douglas (grandmother; deceased)
Stephen Logan Sr. (grandfather)
Elizabeth "Beth" Henderson (grandmother; deceased)
Stephen "Storm" Logan Jr. (uncle; deceased)
Donna Logan (aunt)
Katie Logan (aunt)
John Douglas (great-grandfather; deceased)
Ann Douglas (great-grandmother; deceased)
Helen Logan (great-grandmother; deceased)
Marcus Walton Forrester (cousin)
William Logan Spencer (cousin)
Ambrosia "Rosie" Forrester (first cousin, once removed)
Thomas Hamilton Forrester (half-brother)
Stephanie "Steffy" Forrester (half-sister)
Phoebe Forrester (half-sister; deceased)
Eric "Rick" Forrester Jr. (half-brother)
Bridget Forrester (half-sister)
Hope Logan (half-sister)
Jack Hamilton Marone (biological half-brother)
Thorne Forrester (half-uncle)
Kristen Forrester (half-aunt)
Felicia Forrester (half-aunt)
Angela Forrester (half-aunt)
Nick Marone (half-uncle)
Diana Carter (half-aunt)
Eric Forrester III (half-nephew; deceased)
Zende Forrester Dominguez (half-cousin; via adoption)
Alexandria Forrester (half-cousin; deceased)
Dominick "Dino" Damiano (half-cousin)
Nicole Marone (half-cousin; deceased)
Logan Knight (half-nephew)
Douglas Forrester (half-nephew)
Elizabeth Forrester (half-niece)
Coco Spectra (kissed)
Nearly hit by a forklift 
Ridge "R.J." Forrester, Jr. is the son of Ridge Forrester and Brooke Logan. Just after Ridge and Brooke's wedding in South America, Ridge was kidnapped and presumed dead after falling into a furnace. Ridge's half-brother, Nick Marone, comforted the grieving Brooke, and Nick and Brooke ended up making love. Ridge turned up alive, and Brooke didn't know if her baby was Ridge's or Nick's. Sally Spectra, Jackie Marone, and Deacon Sharpe all had their reasons for wanting Nick to be the father and separately tampered with the baby's paternity tests; the day he was born, a new test named Ridge his father. Instead of naming the boy Dominick Marone, Jr., as planned, Brooke named him Ridge, Jr. after Ridge.
Some time later, R.J. and his half-sister, Hope Logan, started a fire in the living room after unintentionally being left alone all night. This sparked a custody battle between Brooke and Ridge; eventually, R.J. and Hope were returned to Brooke's care. Years afterwards, the Forrester family worked overtime to make sure R.J. didn't find out that Brooke was missing at sea in a plane crash.
R.J. later attended boarding school in Europe, where Ridge visited him after dumping Brooke on their honeymoon. R.J. returned to Los Angeles with his father in 2013; while R.J. was excited by the idea of his parents once again remarrying, he also enjoyed spending time with his aunt, Katie Logan, and his infant cousin, Will Spencer. When Brooke told R.J. she wasn't reuniting with his father after all, R.J. took it in stride, as he did when Brooke reported that she and Bill Spencer, Jr. were getting married instead. R.J. thought it was cool when Bill gave him a sword necklace like all the Spencer men wore, unaware of the hostilities the trinket caused between his father and Bill. R.J. was kept in the dark once again when Ridge went missing in the Persian Gulf after falling out of a helicopter.
In 2016, R.J. came home from a boarding school in Ojai, California, encouraged to see his parents in an embrace. But when R.J. learned that Brooke was planning to marry Bill, R.J. confronted Bill and swore he wouldn't let the wedding happen. Confused by his siblings' support for the marriage, R.J. breathed a sigh of relief when Brooke delayed her wedding to Bill out of respect for R.J.'s feelings, later learning that, as Bill's wife, Brooke was to be gifted Bill's 12.5% share of Forrester, which would help Ridge wrest control of the family's design house, Forrester Creations, from R.J.'s grandfather Eric Forrester, who had married Quinn Fuller, a woman with a criminal past everyone despised. R.J. felt bad when Eric was hospitalized following a brain hemorrhage he sustained while raging at his family for boycotting his wedding to Quinn.
R.J. helped convince Ridge that he wanted Brooke more than Bill's stock and cheered when Bill left Brooke at the altar because Ridge had tried to sway Brooke's affections before the ceremony. R.J. rolled his eyes through a day of bonding Brooke set up with Bill, which included being instructed in the use of Bill's punching bag and sitting through a tour of Bill's hidden bunker filled with money and guns. Knowing Bill wanted to elope with Brooke, R.J. assisted Ridge in recreating a heart in the sand that had been a highlight of one of Ridge and Brooke's previous weddings; R.J. was overjoyed when the gesture resulted in his parents finally getting back together. R.J. also supported his cousin, Zende Forrester Dominguez, in his quest to win back his lost love, Nicole Avant, and attended their eventual wedding.
R.J. was charmed by potential new intern Coco Spectra and tried to assure his elders that Coco was not like her great-aunt, Sally Spectra, who had a history of stealing Forrester designs. After Ridge dismissed Coco, R.J. gave her a kiss goodbye, then escaped being hit by a forklift on the Forrester loading dock thanks to Coco. Grateful that his parents let Coco stay on, R.J. put her to work on the intern team and innocently showed her Ridge's confidential sketches.