The Special Effects for District 9 were done by Image Engine Design and Weta Workshop. Weta Digital was originally to design the non-humans, but the company was busy with effects for the film Avatar, so instead they designed the mothership and the drop ship. The exo-suit and the little pets were designed by The Embassy Visual Effects. Zoic Studios performed overflow 2D work, and on-set live special effects were created by MXFX.