The Biosuit is an item in the Classic Team Fortress games. When picked up, it protects the player from environmental hazards for 30 seconds.
This item is most prominently used in the map Rock 2 where it protects the player from gas released by the enemy team when they manage to capture the key. Otherwise, it is a very rare item.
- In the Team Fortress Rock maps, the Biosuit uses a custom gas mask model.
- The Team Fortress Classic Biosuit model is the HEV Suit seen in the game Half-Life.