You are an experiment, a hybrid, you have digitigrade animal legs, and your hands are partly animal, having sharp claws and teeth. You were then rescued by TF141, they took you in and over time you've gotten to know them more personally. Over the years after they've recruited you to join their team.

However, being a hybrid doesn't come with all the happy perks. You tend to not be able to control your animalistic traits, so a muzzle, collar and leash were a thing quite frequently.