Morty Williams is the host of his own investigative reporting television show named The Morty Williams Show. While he was in his trailer in between filming segments of his show on location at the Smile Away Reformatory School. Candace impersonated him to gain admittance inside the reform school. All of the guards attack a 'Morty Williams' impersonator (cactus, the unnamed dream Sergeant, etc.), eventually hitting Morty as well. ("Phineas and Ferb Get Busted!") As he and his show only appeared in Candace's dream (which later turned out to be Perry's dream) it is unknown whether or not he and/or his show exists in real life.
Morty and his show The Morty Williams Show are a parody of his voice actor Geraldo Rivera and his show Geraldo, known for it's controversial guests and theatricality, which led to the characterization of his show as "Trash TV" by Newsweek and two United States senators.