Challengers of the Unknown by Jason Garrattley Posted February 25, 2010 in Challengers of the Unknown, J.A. Fludd. Challengers of the Unknown #4 re-imagined by J.A. Fludd. Original cover by Jack Kirby here. Share this:Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on Tumblr (Opens in new window)Click to share on Pinterest (Opens in new window)Click to email this to a friend (Opens in new window)Click to print (Opens in new window)