Larry H. Parker, an accident and personal injury lawyer whose television commercials promised he’d “fight for you” and became staples in living rooms across Los Angeles, died on March 6 in San Juan Capistrano, Calif. He was 75.

His death was confirmed by his son, Justin Parker, who did not cite the cause.

Over the years, Angelenos became familiar with Mr. Parker’s personal brand of braggadocio and promise, as his face could be seen on billboards across the city and on television ads.

“When it comes to the law, you want someone who carries a big stick,” a narrator says in one commercial that cuts from a hockey brawl to a shot of Mr. Parker in a suit and glasses, standing with both hands on a desk, ready for a courtroom showdown.

“People sometimes ask me why I seem so angry in my television commercials,” Mr. Parker said in another ad. “Well the truth is I am angry. I’m angry when big insurance companies take advantage of little people.”

His ads cultivated an image of a legal brawler whose menacing presence on the screen could be used in a plaintiff’s favor.

It appeared that those who were injured were eager to engage the services of his firm, the Law Offices of Larry H. Parker. Since its founding 50 years ago, the firm has recovered more than $2 billion in verdicts and settlements, according to its website.