|Age||11 years old|
|Family||Hugh Test (father)|
Lila Test (mother)
Mary and Susan Test (sisters)
|Voice by||James Arnold Taylor|
Johnny Test (voiced by James Arnold Taylor) is a troublesome, narcissistic and widely disrespectful 11 year old boy who is the son of Hugh, Chauffeur of Lila Test, chauffeur of Susan and Mary and anti-hero of the show. Because he has Susan and Mary by his side, he can live any kids dream, only to find that some dreams aren't worth living. He is usually seen with his partner-in-crime, Dukey, his genetically altered mutt. He also gives Johnny Coupons to his sisters for helping him in his daily problems. When redeemed, he does their tests for free.
Grumpy, unintelligent, safe, strict, disrespectful, serious, caring, wise, irresponsible, vain, arrogant, sarcastic.
He is a natural blonde with the tips of his spiky hair bright red and has bright blue eyes. He wears a black shirt with a radioactive symbol with a blue sleeve jacket, green pants, black and white sneakers and has a wristwatch on his right hand.