Challengers of the Unknown (2004-2005) Writer Howard Chaykin Artist Howard Chaykin Genres Action Exploration Sci-Fi Themes Genre Deconstruction Political Thriller Psychological Thriller Satire Stolen Moments, Borrowed Time Challengers of the Unknown Volume 4 #1 Challengers of the Unknown Volume 4 #2 Challengers of the Unknown Volume 4 #3 Challengers of the Unknown Volume 4 #4 Challengers of the Unknown Volume 4 #5 Challengers of the Unknown Volume 4 #6