Elon Musk has five people in his core team at Twitter to help him make changes to the platform. The team includes Jared Birchall, the head of the family office that manages Musk's assets, Jason Calacanis, an entrepreneur who's close to Musk, and Indian-origin engineer Sriram Krishnan. High-profile celebrity lawyer Alex Spiro and investor David Sacks are also helping Musk.