Revelation 1:1

John : a son of Zebedee; younger brother of James; the beloved disciple of Christ,a relative of Annas the high priest,a son of Mary the sister of Barnabas, and surnamed Mark,the father of Simon Peter

Revelation 3:20

There is no Names related to this verses.

Revelation 12:9

Satan : a person, male (evil angelic),an angel that has rebelled against God