Na na na na na na na na na na Batman....
Following the success of the Giant Lego Darth Vader - the natural successor was this... Batman!
Print all the parts - No support required, although some trimming necessary.
Press together - may need some glue for the arm and leg pins.
Use the template to cut out the cape from some material.
UPDATE: Now with Snap appendages courtesy of Skimbal
Added a Hollow Helmet option for use with Lego head, and also a Batman of the Future helmet.