That’s a phase generally given to an actor who stands out and gives a performance above those in the script. However it can also apply to a Star who makes sure that he gets all of the meaningful parts of the script. Well during (Pope) Francis-es Midnight Christmas (Mass), which the news media called traditional, instead an assistant placing the baby Jesus on the altar manger, Francis chose to do it himself. To me this shows a lack of charity in not sharing this sacred main event with the other assistance. This would be like Jesus at His birth  placing himself in the manger after His birth instead having Joseph place Him there. After all the Pope is supposed to be another Jesus.

In Christ, Joseph LINK for photos