The female heavy is a model and sound replacement for the default heavy who appears in Team Fortress 2.
Model[]
The female heavy was conceived and created by ChemicalAlia (AKA Shaylyn Hamm).
Voice[]
As is the case with the Female Medic, DustyOldRoses did not make the voice pack for the model, instead gamebanana user "Jackrabbit Slams" is credited to doing the voice acting.