Most Roman Catholic churches have a "crucifix", Jesus crucified on the cross. Most Episcopal Churches do not have a crucifix; they may have an empty "red" Cross, a "gold" Cross (our risen Lord) or a Christus Rex. Christus Rex, or Christ the King, depicts our risen Lord, usually on a gold Cross.

"We have such a high priest, who is set on the right hand of the throne of the Majesty in the heavens",
Hebrews 8:1

Just to give a few examples of Jesus being referred to as "king":

Where is the Child who has been born king of the Jews? Matthew 2:2 ... Look, your king is coming to you Matthew 21:5, John 12:15 Are you the King of the Jews? Matthew 27:11, Mark 15:2, Luke 23:3, John 18:33 This is Jesus, the King of the Jews. Matthew 27:37, Mark 15:26, Luke 23:38, John 19:19 To the King of the ages, immortal, invisible, the only God, be honor and glory forever and ever. 1 Timothy 1:17 our Lord Jesus Christ, he who is the blessed and only Sovereign, the King of kings and Lord of lords. 1 Timothy 6:14-15 referring to Jesus and quoted from Deuteronomy 10:17