Tesla and SpaceX CEO Elon Musk has enlisted another high-profile defense lawyer to defend against a defamation lawsuit brought by the British cave explorer Vernon Unsworth—the man Musk referred to as a “pedo guy” on Twitter following the rescue last year of a youth soccer team from a cave in Thailand.

Musk has so far in the case been represented by a team from Hueston Hennigan in Los Angeles led by partner John Hueston. But on Wednesday Quinn Emanuel Urquhart & Sullivan New York partner Alex Spiro made an appearance on the docket.