Varoufakis, who is tall and bald, with a rakish demeanor, wore boots and a black trenchcoat, like a character from “The Matrix.” In 2015, amid one of the worst financial crises in Greece’s history, he was appointed by the country’s new left-wing government to try to save the financial system and to fend off punishing austerity measures that the country’s creditors had proposed in exchange for a bailout. (During the negotiations, the Financial Times called him “the most irritating man in the room.”) The press referred to Varoufakis as the “rock-star finance minister” and noted his leather jackets and glamorous artist wife, Danae Stratou. “So what that I have a motorcycle,” he said. “I live in Athens—there’s no way you can get around in a car.”