David James(XLII)

Was actually in the military when he was younger and so was comfortable with the weapons and battle sequences of District 9, however, has said that he did struggle with the amount of profanity expected of him when playing the character of Koobus.

[on the making of District 9 (2009)]: I'm being paid to be a boy of twelve. As a kid growing up and wanting to shoot aliens and play with my mates and my friends, you created all this in the back of your mind.