Ignus

(Ignus, also known as Pyroidae (or 'Pyro' for short), describes the family of TF2-nimals known for their distinct and odd appearences along with their fire and electrical abilities.

New findings show that Ignus family split off from the Aedificare family (The Engineers) about 1 to 1.5 million years ago, making it one of the latest classes to evolve.