Yet Avenatti’s tactics and visibility may carry risks that could undermine his ability to represent his client, who is suing longtime Trump attorney Michael Cohen and the president to be released from a non-disclosure agreement. Scrutiny of his business record and of his motives has provided grist for distracting headlines in recent days. And his publication last week of Cohen’s banking history — hard-to-get information touching on some of the most sensitive issues before the White House — could jeopardize his ability to represent Daniels in court, some experts say.

“Nothing he has been doing in the last four to six weeks with his multiple television appearances advances the interests of his client in the California action,” said Stephen Gillers, a New York University law professor who specializes in ethics. “He’s catapulted himself to be the story. There are dangers when a lawyer becomes so publicly vocal.”

Gillers described Avenatti’s media presence as highly unusual for an American lawyer, not only because of his frequent television appearances but also because his arguments are more sweeping than his client’s narrow complaint. “I really cannot think of an equivalent,” he said.