The Arachno-Arsonist is a community-created cosmetic item for the Pyro. It replaces the Pyro's head with a dark-brown head of a spider. The fur around eyes is a bit darker than on the rest of the head. Spider's fangs, or chelicerae, are moving with the player's movements.
The Arachno-Arsonist was contributed to the Steam Workshop.
- The Arachno-Arsonist was added to the game.
- Rarely the fangs will be floating off of the head or will be facing the wrong way.
- The prefix "Arachno" refers to the taxonomic class "Arachnida" to which spiders belong.