A SELF-DESCRIBED Nazi dad plastered head to toe in swastika tattoos and sporting a moustache made famous by Adolf Hitler says he is misunderstood.

Isidore Heath Campbell, who named his children Adolf Hitler Campbell and JoyceLynn Aryan Nation Campbell, made headlines in 2008 for trying to buy a cake.

Mr Campbell and his then-wife, Deborah, both white supremacists, asked a local store to bake a cake with the words “Happy Birthday, Hitler” written on top with icing.

The store refused and the story was shared around the world. Days later the couple received a phone call from child protective services and had their two children taken away.

That was a little over seven years ago and the couple has largely stayed out of the news. A new documentary, released on US iTunes on April 5, is expected to change that.

The film, Meet the Hitlers, explores where the family finds itself all these years down the track and how naming their son after the world’s most famous Nazi has affected them.

“I have different beliefs. I believe in whites (living) with whites, blacks with blacks, Spanish with Spanish,” Mr Campbell says. “I don’t see anything wrong with that.”

In an excerpt from the film shared by The Atlantic, Mr Campbell said his custody battle is ongoing. He said it has nothing to do with neglecting his children and everything to do with outside perception.

“A person makes a person, a name doesn’t,” he told filmmakers.

He said the family was “treated like garbage” after the story went public and nothing has changed.

“(Child protective services) stripped my kids down in my house, checked my kids all out. They found no child abuse, no nothing. They got a court order and they removed my kids. That was it. I didn’t even get to say goodbye.”

The New Jersey family is facing another struggle. Mr Campbell, 42, was arrested last month in southern Pennsylvania for the aggravated assault of his fiancee, Bethanie Zito.

The New York Daily News reports Ms Zito initially made a report to police about a domestic assault but later denied it happened.

“I want to put it out there that he’s innocent,” she said in December. “He did not do this. He does not deserve to be in prison.”

Mr Campbell says people judge him based on what he looks like and use his appearance to punish him.

“You can’t just make an allegation about somebody. You have to have evidence and proof. Anybody could say anything about anybody. Does that make it okay for them to come in and steal your children?”

The film is not yet available in Australia.