Developed by Justin Mabry. Trick or Treat Studios and Miramax Films are proud to present the official Halloween H2O: Twenty Years Later mask! This mask is an identical replica of the mask worn by Michael Myers in the Miramax film Halloween H2O: Twenty Years Later. The official Halloween H2O: Twenty Years Later mask was designed by our Art Director Justin Mabry and is based on numerous film stills to make it the most accurate mask ever released.