Hozen Omaya operates as Perman No. 4, also known by the nickname Paryan. Approximately 12 to 14 years old, he is the oldest core member of the Perman team. His background sets him apart as a Buddhist monk residing in Osaka with his father, geographically and culturally distinct from the other Permans primarily based in Tokyo.

His defining trait is a pragmatic and practical approach, which frequently leads to disagreements with teammates but also proves essential for resolving complex missions and preventing failures. This practicality combines with a strong sense of responsibility and notable mental resilience. He demonstrates strategic aptitude, often devising unconventional or effective plans during challenges and mediating team disputes, particularly between Mitsuo (Perman No. 1) and Sumire (Perman No. 3). While generally reliable in assisting fellow Permans, he occasionally displays greed or self-interest.

Hozen Omaya holds a long-term aspiration to establish and manage a large company for significant financial success. He utilizes a turquoise-blue copy robot to maintain his secret identity.

The character appears in the original manga serialization and the first anime adaptation. He is absent from the second anime series and related media starting in 1983, where the team composition shifts to four members.