This item has four styles, named "Safety First", "Reinforced", "Streamlined", and "A Serious Absence of Fear". The "Reinforced" style adds a metal visor over the mask along with a radioactive trefoil symbol on the back of the helmet, while "Streamlined" and "A Serious Absence of Fear" remove the right filter from the previously mentioned styles.
The HazMat Headcase was contributed to the Steam Workshop.
|Safety First||Reinforced||Streamlined||A Serious Absence of Fear|
- The HazMat Headcase was added to the game.
- [Undocumented] The HazMat Headcase was added to the item drop system.
- [Undocumented] The HazMat Headcase can now be unboxed with Unusual quality.
- The HazMat Headcase was added to the Mann Co. Store.
- [Undocumented] Modified the models for the HazMat Headcase.
- Updated The HazMat Headcase so it can be equipped by the Sniper.
- [Undocumented] Added Strange quality.
- The HazMat Headcase can no longer be unboxed in Unusual quality.
- If this item is in Unusual quality, most particles (with the exception of several such as Purple Energy) come out of Pyro's chest, rather than out of the HazMat Headcase.
- The HazMat Headcase was originally designed around a piece of concept art for Team Fortress 2. Valve felt the design too closely mimicked their own art, so they initially rejected the item. The creators then recreated the hat in a new style, with a visual distinction from the concept art.
- In all styles, there is a hidden note in the bottom right hand corner of their textures reading "Aca ♡ Prim 4evr~", along with a smiling face ":D".
- The Sniper version of the HazMat Headcase was submitted as a joke, but was added anyway by Valve.