At the time of this writing, this film has three titles: Iron Invader, Iron Golem, and Metal Shifters (plural title, one creature - misleading). Aliases are usually used to disguise identity. Perhaps the hope was that consumers might mistakenly buy three titles expecting to see three different movies.
Having written that, the film has several A-list Canadian sci-fi actors reacting to a well conceived CGI monster.
Not a terrible way to spend 90 minutes.