One of Arnold Schwarzenegger's sons has revealed why doesn't use his father's last name.
While Katherine, Christina, Patrick, and Christopher have all taken on the Schwarzenegger name, their half-brother Joseph Baena has decided to use his mother's.
Baena is the child Schwarzenegger fathered during his affair with former housekeeper Mildred Baena.
She was reportedly pregnant with her son when Schwarzenegger's ex-wife Maria Shriver was expecting their fourth child – a revelation that didn't emerge until 2011.
Watch Joseph Baena open up about not using his dad's last name:
However, he doesn't want to rely on his father's last name to propel his career.
Speaking to Inside Edition, Baena was asked why he doesn’t use his "famous last name", to which he replied: "Well I already have a last name, and I don't have a problem with my last name.
"I like my last name."
The 24-year-old went on to discuss his career plans, saying he really wants to become an actor, much like his famous father.
The reporter then asked if he feels like he has "big shoes to fill", given his father's reputation in Hollywood.
"Well, literally we have the same shoe size," Baena laughed, adding: "I've never thought of it in that way. My career path is really just my own."
While Baena said the media has "always been in [his] face", he said he tries to "drown it out", saying it's just "outside noise" to him.
"My mom is one of my main motivators, and seeing her and how she works so hard, I want to make her proud," he added.
"Same with my father. What he made of himself from nothing. I mean, both of my parents are immigrants that kind of created something out of nothing. So, seeing them, it's been a huge inspiration, and I want to make them proud. I want to myself proud," he added.
Baena previously opened up about why he has a different last name to his dad, telling E! News' Daily Pop: "There's a few different variables in that.
"But that's just not my main priority at the moment, so I'm just focused on building myself up and building my career in acting and real estate and just focusing on that right now."
He went on: "I mean, my dad is a stallion. He's a man's man, I like to think, and I look up to him a lot. So in a way, he's influenced a lot of things: the path that I have taken with acting, with fitness and my physique and the many other things that I'm doing."