Race: Human
Age: Unknown
Location: Q-City
Occupation: Superhero
Level: S-Class; Rank: 12
Affiliation: The Heroes Association
Debut: Chapter 20
Watchdog-man is a young man of average height and weight. He has a blank and uninterested look on his face and dresses himself in a full-body dog suit, with his face showing where the dog's mouth should be.
(Source: One Punch-Man Wiki)