protector
A "protector" is someone or something that provides safety, support, or defense to others. This role can be seen in various contexts, such as a parent who safeguards their child, a guardian who looks after a vulnerable individual, or even a law enforcement officer who ensures public safety. Protectors often take on responsibilities to prevent harm and promote well-being.
In nature, protectors can also refer to species that help maintain the balance of their ecosystems. For example, certain predators control the population of prey species, which in turn supports the health of their habitat. Overall, protectors play a crucial role in fostering security and stability in both human and natural environments.