Elias was a character in The Blacklist.
He was born in Germany and at some point became the leader of the Die Entrechteten, a Neo-Nazi gang that smuggles drugs and weapons and is one of the most powerful and ruthless gangs in Europe.
The Disenfranchised recruit "Christof" (Tom Keen) for a mission after one of their own, Kohl, was shot by a hitman, unaware it was Tom himself in order to infiltrate the gang. He is soon introduced to the Disenfranchised leader, Elias.
Red visits Ruddiger in rehab, trying to obtain information about Die Entrechteten. He lets Red know about Kohl's death and that they recruited a new boy that is looking for F2000 assault rifles.
Donald and Red are looking for Franz Becker, who they think will get in contact with Tom. Red lets Donald know once Tom takes a new undercover role, he becomes real. He is the covert operative that convinces himself into the role.
At the MWC Kaiser Airfield in Munich Germany, the FBI, led by Donald, storms in and raid a shipping container full of machine guns.
A car drives into the garage and Tom comes up to the car where he sees Red, Dembe and Donald. He wants to know why they are here and tells them to leave. They inform Tom that he needs to come back to save Liz who is in court for the murder of Metro officer and DC harbor master Eugene Ames, who was killed by Tom. Elias arrives and sees Red and wonders why he is here. Red lets him know that his shipment was raided and he can get it back. First, he lets him know that Tom is untrustworthy and might be an undercover cop.
After Elias suggests they kill Tom, Tom swiftly kills one of Elias' men and then escapes, creating a shootout. In the resulting gunfight, Elias' second-in-command and his remaining enforcers are killed by Reddington and Dembe, while Elias himself is shot to death by agent Ressler.
The Germans track down both Tom and the Major and torture them for their leader Elias' death. After they threatened him to kill Elizabeth if he didn't talk his motives for his infiltration, Tom and the Major make a deal, in exchange for Liz would not be their target, he reveals his assignment, he's going to help them solve the murder of a woman named Sarah Hastings, who was affiliated to the Germans, which is the main reason they want revenge for her death. After accepting the truce, they let Tom and the Major go.