It’s not a really big thing, but it is a pet peeve of mine (and some others); the name of the series isn’t “Dues Ex” but “Deus Ex” (day-us ex), as in “deus ex machina” (day-us ex mack-in-a).

“Deus ex machina” literally translates as “God from (the) machine”, and originally referred to a type of stage prop used in ancient plays, then in more modern times the term came to refer more generally to the sort of plot device that used that prop, which is a previously unmentioned person or thing that suddenly appears to save the heroes from an otherwise inescapable threat. At some time in the 60s or 70s it started to become popular to use it in a more literal sense in sci-fi stories about machine intelligence or cyborgs.