Who is 'he that cometh after me' in Matthew 3:11?

In Matthew 3:11, 'he that cometh after me' refers to Christ. John is speaking, and the context identifies the coming one as Christ, the promised King, who is mightier than John and whose shoes John is not worthy to bear.

Les explains that John is preaching repentance and baptism because the King and the Kingdom are on the scene. The King is now ready to fulfill the covenant promises of being their King. When John comes to verse 11, he says he indeed baptizes with water unto repentance, but the one coming after him—speaking of Christ—is mightier than he is, whose shoes John is not worthy to bear. Les identifies the coming one as Christ.

Matthew 3:11

I indeed baptize you with water unto repentance: but he that cometh after me is mightier than I, whose shoes I am not worthy to bear: he shall baptize you with the Holy Ghost, and with fire:

In Matthew 3:11, who is the baptizer and who is baptized with the Holy Spirit?

In Matthew 3:11, John the Baptist is the baptizer with water unto repentance, while the mightier one coming after him—Jesus the Christ—is the baptizer who will baptize the Jews with, or into, the Holy Spirit and with fire.