Who Is Decker Nilsson Sixx? The Remarkable Journey of Nikki Sixx’s Son

Decker Nilsson Sixx is the son of Mötley Crüe co-founder Nikki Sixx and former model Brandi Brandt, and he was born on May 23, 1995. He grew up in one of rock music’s best-known families, yet he built a career far from concert stages and recording studios. He studied business at the University of Southern California, graduated with honors in 2021, and went on to work in real estate development in Arizona. This article covers his family background, education, career and relationship with his father, and it separates confirmed facts from the guesswork that fills many celebrity profiles.

Who Is Decker Nilsson Sixx?

Decker Nilsson Sixx is an American businessman and the third child of Nikki Sixx, the bassist and primary songwriter of Mötley Crüe. His mother is Brandi Brandt, a model and actress who appeared as Playboy’s Playmate of the Month in October 1987.

Most people search for his name because of his surname. They want to know what the son of a famous rock star does with his life, and the answer surprises many readers. Decker chose construction and real estate over music.

He does not host a show, launch a brand or court the press. Nearly everything the public knows about him comes from his father’s social media posts and from profiles of the Sixx family in outlets such as People.

What Are the Key Facts About Decker Nilsson Sixx?

The table below gathers the verified details about Decker Nilsson Sixx in one place.

Detail	Information
Full name	Decker Nilsson Sixx
Date of birth	May 23, 1995
Age (October 2026)	31 years old
Zodiac sign	Gemini
Nationality	American
Father	Nikki Sixx, bassist of Mötley Crüe
Mother	Brandi Brandt, model and actress
Birth order	Third child and second son of Nikki Sixx
Full siblings	Gunner Nicholas Sixx and Storm Brieann Sixx
Half-sisters	Frankie-Jean Mary Sixx and Ruby Sixx
Parents’ marriage	1989 to 1996
Education	University of Southern California, graduated with honors in 2021
Degree	Business administration
Profession	Real estate development, pre-construction manager
Reported employer	Sticks & Bricks Development, Scottsdale, Arizona
Public profile	Low profile, no music career

Nikki Sixx’s Wikipedia entry confirms the birth dates of all his children, and People’s family profile confirms Decker’s career details. Treat figures such as net worth with caution, because no reliable source publishes them.

Who Are Decker Nilsson Sixx’s Parents?

Decker’s father is Nikki Sixx, born Frank Carlton Serafino Feranna Jr. on December 11, 1958, in San Jose, California. His mother is Brandi Brandt, born on November 2, 1968, in Santa Clara, California.

Nikki and Brandi married in 1989 and divorced in 1996. They had three children during those years: Gunner in 1991, Storm in 1994 and Decker in 1995. Decker was a toddler when his parents separated, so he grew up with two parents who lived apart.

Nikki married actress Donna D’Errico a month after the divorce, and that marriage added a half-sister to Decker’s family. Nikki has said in public that his children matter more to him than any album or tour.

Who Is Nikki Sixx, Decker’s Father?

Nikki Sixx is a musician, songwriter, author, photographer and radio host who co-founded Mötley Crüe in Los Angeles in 1981 with drummer Tommy Lee. The band rose to national fame with Shout at the Devil and reached its commercial peak with Dr. Feelgood in 1989, the year Nikki married Decker’s mother.

Nikki wrote most of the band’s best-known songs, and he wrote about his heroin addiction in The Heroin Diaries, a memoir that reached the New York Times Best Seller list in 2007. He also formed the side project Sixx:A.M. and hosted the syndicated radio show Sixx Sense from 2010 to 2017.

Nikki has spoken openly about recovery, and he supports the charity Covenant House through his program Running Wild in the Night. Netflix released The Dirt, a film about Mötley Crüe, in 2019, and the band toured stadiums with Def Leppard from 2022 to 2023.

Decker watched all of this from a family seat rather than a stage. His father’s fame gave him a recognizable name, but it did not decide his path.

Who Are Decker Nilsson Sixx’s Siblings?

Decker has four siblings, and Nikki Sixx has five children in total. Two of them share both of Decker’s parents, and two are his half-sisters.

Gunner Nicholas Sixx, born on January 25, 1991, is the eldest and the sibling who followed their father into music. Storm Brieann Sixx, born on April 14, 1994, is his older sister and keeps a lower public profile.

Frankie-Jean Mary Sixx, born on January 2, 2001, is Nikki’s daughter with Donna D’Errico. Ruby Sixx, born on July 27, 2019, is Nikki’s youngest child. Her mother is Courtney Bingham, whom Nikki married on March 15, 2014.

The age gap between Decker and Ruby is more than 24 years. The Sixx household has a wide mix of generations, interests and careers.

What Is the Timeline of Decker Nilsson Sixx’s Life?

Decker’s life so far fits into a short list of dated milestones. Each one comes from Nikki Sixx’s biography, People’s family profile or Nikki’s own social media posts.

• 1989: Nikki Sixx marries Brandi Brandt.
• 1991: Decker’s older brother Gunner is born.
• 1994: Decker’s sister Storm is born.
• May 23, 1995: Decker Nilsson Sixx is born.
• 1996: His parents divorce, and Nikki marries Donna D’Errico a month later.
• 2001: Half-sister Frankie-Jean is born.
• 2014: Nikki marries Courtney Bingham.
• 2019: Half-sister Ruby is born.
• May 2021: Decker graduates from USC with honors.
• 2024: People profiles him as a pre-construction manager in Arizona.

The timeline shows a steady pattern. Decker’s story moves from family milestones to personal achievement, and the later entries belong to him alone.

Why Do People Search for Decker Nilsson Sixx?

People search for Decker Nilsson Sixx for three main reasons. Fans of Mötley Crüe want to know about the band’s family members, readers of celebrity news follow the Sixx household, and others simply wonder what became of a rock star’s children.

Decker answers that last question well. He did not chase fame, and he did not turn his surname into a brand. He studied, trained and took a job in a skilled trade of planning and building.

That choice makes his profile useful for readers who care about career paths as much as celebrity. His example shows that a child of a famous parent can build an independent working life.

What Did Decker Nilsson Sixx Study?

Decker studied business administration at the University of Southern California, a private research university in Los Angeles. He graduated with honors in May 2021.

Nikki Sixx announced the milestone on Instagram. He wrote that his son graduated with honors from USC and called him a great son and a great friend. Nikki also said Decker never complained about hard work and treated every difficult situation as a lesson he could use in his businesses.

That praise tells readers something about Decker’s character. He picked a practical degree, finished it with distinction and moved straight into a professional field.

Many children of celebrities lean on family connections early in life. Decker’s education shows a different route, one built on a degree and steady work.

What Does Decker Nilsson Sixx Do for a Living?

Decker Nilsson Sixx works in real estate development as a pre-construction manager at Sticks & Bricks Development in Scottsdale, Arizona. People reported this detail in its 2024 profile of Nikki Sixx’s children.

According to that profile, Decker first became interested in the field after an internship at a luxury resort development in Turks and Caicos. In his current role, he manages construction budgets and coordinates with utility companies before building begins.

Pre-construction work covers the planning stage of a project. Managers in this stage estimate costs, review designs, track permits and arrange the services a site needs, such as power and water. Good planning at this point prevents expensive mistakes later.

Sticks & Bricks Development is a luxury home builder that serves Scottsdale, Paradise Valley and Phoenix. Job titles change over time, so check the company’s website or his professional profiles for his latest position.

How Close Is Decker Nilsson Sixx to His Father?

Decker and Nikki Sixx share a close bond, and Nikki shows it in public. His graduation post spoke with the warmth of a friend as much as a father.

Earlier celebrity coverage described the two as baseball fans who attend Los Angeles Dodgers games together. That shared hobby fits Decker’s reported love of the sport, even though he did not play it in college.

Nikki has said that fatherhood grounded him after years of addiction and touring. His children, including Decker, gave him a reason to stay sober and present.

The relationship works because neither man tries to copy the other. Nikki lives in front of crowds, and Decker prefers quiet, focused work. They respect each other’s choices.

Why Does Decker Nilsson Sixx Keep a Private Life?

Decker keeps a private life because he built a career that does not depend on public attention. He works in construction and real estate, where results matter more than followers.

Reports describe his social media use as light and selective. He does not appear to promote himself, and he does not sell his family connection. Readers should respect that boundary, and this article does not publish details about his home, relationships or daily movements.

Privacy also protects him. Children of famous parents often face intense scrutiny, and a low profile gives Decker room to build his own record.

His choice sends a clear message. A famous surname can open doors, but it does not have to define a person’s work.

What Do Online Sources Get Wrong About Decker Nilsson Sixx?

Many websites repeat errors about Decker Nilsson Sixx, and a careful reader should check key facts before sharing them.

Some pages name Courtney Sixx as his mother. That is wrong. Courtney Bingham is Nikki’s wife and the mother of Ruby, while Brandi Brandt is Decker’s mother. A few pages also call him the youngest child, but Frankie-Jean and Ruby were born after him.

Sources also disagree on small details. Nikki Sixx’s Wikipedia entry places his marriage to Brandi Brandt from May 1989 to November 1996, while Brandi’s entry gives May 1990 as the start. Reliable outlets do not confirm his birthplace, so treat any specific city with care.

Net worth claims have no reliable basis either. Nobody has published verified financial records for Decker, and estimates on content sites often copy each other.

Conclusion

Decker Nilsson Sixx shows that a famous family does not set a fixed future. He was born into rock history, earned a USC degree with honors and built a career in real estate development. His story is short on scandal and long on steady work, and that is why it stands out.

Frequently Asked Questions About Decker Nilsson Sixx

Who is Decker Nilsson Sixx?

Decker Nilsson Sixx is an American businessman and the son of Mötley Crüe co-founder Nikki Sixx and former model Brandi Brandt. He was born on May 23, 1995, graduated from the University of Southern California in 2021, and works in real estate development instead of music.

How old is Decker Nilsson Sixx?

Decker Nilsson Sixx is 31 years old as of October 2026. He was born on May 23, 1995, so he turned 31 earlier this year. His birth date appears in Nikki Sixx’s Wikipedia entry and in People’s profile of the musician’s five children.

Who are Decker Nilsson Sixx’s parents?

His parents are Nikki Sixx, the bassist of Mötley Crüe, and Brandi Brandt, a model and actress who was Playboy’s Playmate of the Month in October 1987. They married in 1989 and divorced in 1996. Decker was their third child and second son.

How many siblings does Decker Nilsson Sixx have?

Decker has four siblings. Gunner Nicholas Sixx and Storm Brieann Sixx share both of his parents. Frankie-Jean Mary Sixx, whose mother is Donna D’Errico, and Ruby Sixx, whose mother is Courtney Bingham, are his half-sisters. Nikki Sixx has five children in total.

Where did Decker Nilsson Sixx go to college?

Decker attended the University of Southern California in Los Angeles. He earned a business administration degree and graduated with honors in May 2021. Nikki Sixx shared the news on Instagram and praised his son’s work ethic, kindness and determination to learn from every challenge.

What does Decker Nilsson Sixx do for a living?

Decker works in real estate development. People reports that he serves as a pre-construction manager at Sticks & Bricks Development in Scottsdale, Arizona, where he manages construction budgets and coordinates with utility companies. An internship in Turks and Caicos first sparked his interest in the field.

Is Decker Nilsson Sixx a musician like his father?

No. Decker did not pursue music, although his father and his older brother Gunner both work in the industry. He chose a business degree and a career in construction and real estate development, which makes his path different from nearly everyone else in his immediate family.

Is Decker Nilsson Sixx close to Nikki Sixx?

Yes. Nikki Sixx publicly praised Decker after his 2021 graduation, calling him a great son and a great friend. Earlier coverage also described the two attending Dodgers baseball games together. Their relationship appears warm, supportive and built on mutual respect for different career choices.

Who is Decker Nilsson Sixx’s mother?

Decker’s mother is Brandi Brandt, an American model and actress born on November 2, 1968. Some websites wrongly name Courtney Sixx. Courtney Bingham is Nikki Sixx’s current wife and the mother of Ruby Sixx, who is Decker’s half-sister, not his mother.

What is Decker Nilsson Sixx’s net worth?

No reliable source reports Decker Nilsson Sixx’s net worth. He keeps his finances private, and published figures usually come from content sites that copy one another. A trustworthy answer needs verified financial records, which do not exist in the public record.1 earlier step