The Four Heavenly Kings are known as guardian deities in Buddhism.
the big four; four top leaders
Figurative use for the four most prominent or powerful individuals in a group, field, or organization. Common in sports, business, and entertainment.
He is one of the big four in the company.
This team has players called the big four.
He is called one of the Big Four in the industry.
This temple enshrines the Four Heavenly Kings.
She is counted among the top four in this field.