Allison uses poison gas canisters, silver and with a skull symbol on the sides, against Ash, Alex, Zach, and Scarlett in a power plant. The poison gas released looks like white vapor.

Ash whipped around and saw what was lying on the ground a few feet away. It was a silver canister with a symbol of a skull on it, and it was split open, gas flooding out of it at an alarming rate. The gas rose up like a wall of steam before her, tendrils spreading toward her. Ash’s eyes went wide, and she turned around and ran, carrying Alex. It was poison gas.

– Fallen Nation