Meet the Twitter Army of Elon Musk Superfans

Elon Musk might have more than 82 million Twitter followers, but only a handful of those can consistently grab the billionaire’s attention and rally Tesla Inc.’s social-media army.

Among the few: a software developer in San Francisco previously banned from Twitter, a former design student in Germany who now works for Tesla, a psychologist in Dayton, Ohio, and an information-technology worker in India.