Michael Corvin (in Hungarian: "Corvin Mihály") is a fictional character from the "Underworld" series. He also appears in the novelizations of these films. He is portrayed by Scott Speedman in the first two films and by Trent Garrett through motion capture and prosthetics in "". He is the first Vampire/Lycan Hybrid from the mythos.
Michael Corvin was in the final Underworld film.
The context does not specify how many Underworld movies have been made.  We only know of the first two films.  We do not know if there were others that did not include Michael.  We know he's in the series as a whole and that he appears in the novels.  It can't be assumed he'll be present in every movie based on the context.