ER/NBC/1994-2009 (Mentally Challenged)
Leon (Marcello Thedford), a mentally deficient 27-year-old African-American brother of Chicago-based Dr Gregory Pratt (Mekhi Phifer). Dr. Pratt has looked after and cared for Leon since the man had a head injury on the streets of Detroit. Before the accident, Pratt’s mom had taken Leon into their house when he was only nine-years-old.
Although Leon can be as sweet and as lovely as a small child, his strength and large beefy physique can make him an ominous foe when he gets excited or becomes violent. Dr. Pratt keeps Leon a secret from his colleagues at Cook County General because he is too proud to ask for help.
Despite Pratt’s advise for Leon to stay in the apartment and out of trouble, the easily-duped Leon gets involved with street gang members who were just using Leon.
As Doctor Pratt confided to a medical colleague “I try to keep him out of trouble but he wants his own friends. He wants to be cool. But they talk him into doing things.” On one occasion, Pratt came home to find Leon knifed and seriously bleeding.
Once, Leon left the apartment and got lost. He remembered that Dr. Pratt worked at the hospital and showed up looking for him. Frantically yelling “G!”, Leon wandered the halls of the emergency department, while many onlookers, not knowing his mental condition, just thought he was a crazy guy. Security guards called to subdue Leon, soon learned what a handful he could be. Luckily, Dr. Pratt arrived in time to ease the situation and then took Leon home.
When luckless Leon was fired from his menial job for stealing, once again Dr. Pratt went to bat for him. But when Leon and a friend were involved in the shooting of cop, and Leon cried “I’m sorry ‘G’. I don’t want to go to jail,” Pratt sent Leon away to his Aunt Rose in Baltimore.
The Leon character debuted on the ninth season episode “Dead Again” that aired 10/03/2002