This beautiful art piece was done by nisawei!
https://www.furaffinity.net/user/nisawei/

Vivian Rearick is a superheroine from the same world as my goat Nick. Her body had been paired with an entity only known as the Guardian Entity, a transparent formless flying creature which merged with her body after the death of the previous host, Dharma Caddel. Upon merging, Vivian was comatose for five months as the entity took the time to fully merge itself with her body.

It enhanced her strength and durability greatly, granted her the ability to fly, it rapidly sped up her healing factor, and her vocal cords were amplified, giving her a sonic screaming ability. Vivian was at first terrified from what the entity did to her body, but she did more research into it and discovered it was merely an animal trying to survive, and the only way it could was to merge. She soon figured she had the power to protect innocent people, so she took the opportunity. Thus she became the Guardian. The previous host was killed by a mastermind, so Vivian knew she wasn’t invincible. She knew she shouldn’t get overconfident.

Vivian has three biological children, and one adopted. They are her motivation to keep working as the Guardian. She fights to protect her loved ones and others who can’t defend themselves.