We have a first look at The Monitor. He will the villain in the Arrowverse crossover starting with the Flash on Sunday, 8 pm on December 9, Arrow on Monday, 8 pm on December 10 and Supergirl on Tuesday, 8pm. No Legends of Tomorrow involved this year.
This above photo is courtesy of Entertainment Weekly.
The Monitor first appeared as fully seen not in the shadow was in G.I. Combat 274 (February 1985) published by DC Comics and created by Marv Wolfman and George Perez.
LaMonica Garrett will be playing the character of The Monitor. He has infinite cosmic power. LaMonica is famous for his role in Transformers:Dark of the Moon (2011).
G. I. Combat 274 can be purchased on ebay for around $10.