Before becoming Pope Leo XIV, Cardinal Robert Prevost presided over one of the most revolutionary reforms of Pope Francis’ pontificate by having women serve on the Vatican board that vets nominations for bishops.

The 69-year-old Chicago native, known for being reserved and private, brings a different style to the papacy compared to his predecessor, according to Time. While Francis was famous for his outgoing personality and spontaneous interactions with crowds, Leo is described by those who know him as more cautious and measured.