This new version more closely matches the character shapes of the original arcade game.
It also includes the player cannon, barrier, and missles.
EDIT: added 3 more shields with various shots taken out of them (shields.zip contains complete set of 4).
download each stl and print separately or download the all in one version and print (I have not tried this yet, they may end up too small).
I have also included a zip that contains all files.