The following is a list of descriptions for characters on the Showtime television series Sleeper Cell.
Darwyn al-Sayeed (played by Michael Ealy), known as Darwyn al-Hakim by the terrorist cells, is the protagonist of Sleeper Cell. As an African-American Muslim FBI agent, Darwyn was assigned to infiltrate an Islamist terrorist sleeper cell. His father, Benjamin al-Sayeed is a Nation of Islam member and his mother was formerly a Methodist, but she converted to Islam to marry Darwyn's father. However, their different ways of practicing Islam led to their breakup. It was also stated that Darwyn was in the United States Army Rangers. In addition to English, he speaks fluent Spanish and Arabic.
Saad bin Safwan (played by Oded Fehr) is the charismatic leader of the terrorist cell. Though his real name is Saad, he is more well known as Faris al-Farik (the "deadly knight"), one of his aliases. He is a former member of the Saudi Arabian National Guard. From 1987 to 1989, he fought the Soviet Army during the Soviet war in Afghanistan. He later returned to Riyadh after he was wounded, and later fought in the Gulf War, on Kuwait's side, along the American forces. After the war, he trained Mohamed Aidid's men in Somalia during the Somali Civil War. Following this, he fought alongside the Bosnian mujahideen in Bosnia (where he met and saved his right-hand man, Ilija Korjenić), and then fought alongside the Taliban in Afghanistan after he met Osama bin Laden, and later run Afghan training camp for Al-Qaeda. In America, he worked in a security company as a Jewish man named Yossi Amran.