Jonathan Majors, known for Lovecraft Country, will be joining the next Ant-Man as the supervillain Kang the Conqueror. Kang is a time-traveling being from the 31st century. He has advanced tech from the future and can control other forms of technology. He typically fights the Avengers but Ant-Man could just be his introduction into the MCU. There have been rumors that the time traveling events in Avengers: Endgame could have created Kang.