Tony Teresi

Tony Teresi is a character introduced in Season 4 of Power.

Past
Before being incarcerated, Tony was a notorious mobster who did many jobs in New York eventually becoming leader of his own gang. At some point, he met Carol Egan and they had a relationship leading to the birth of their son Tommy Egan but he was not aware of his existence. He later married a woman named Kate and though they had no children, the two were happy together for the next forty years before he was sent to prison for murder but he kept his mouth quiet about his involvement.

Season Four
Tony is introduced in Season 4 where he is seen speaking with his visiting wife and she tells him this might be the last time they speak since her health is depleting and wishes they had kids to take care of her so he wouldn't have to worry. He tells her that he has been happy because of her and that's all he needed. Later on, Teresi has a visit from a lawyer where he is egged on to confess his involvement for possible plea due to his wife's depleting health, though worried for her, he could not accept the deal. He is seen in the cafeteria watching an inmate harassed newly imprisoned James St. Patrick and is impressed with James easily snapping the inmate's hand. When the inmate tries to attack, Teresi orders him to back off.

Teresi later has a phone smuggled in the prison where he uses it to get information on James and learns of him being friends with Tommy Egan. He is recognizes Tommy's last name and requests more information on them

Teresi and an inmate James (the one who harassed James) soon enter the exercise room to find Williams dead and James covered in blood. As the inmate attacks James with a knife, the latter manages to hold him off as Teresi sneaks up on him putting him in a submission hold telling him there was a change of plans before the inmate loses consciousness. Teresi then orders for James to take his clothes off as he is confused as Teresi shouts at him to do it to which he does so. Teresi has him switch clothes with the inmate and wipe off the blood on him before he drags the inmate to the exercising equipment where he hangs with him a belt to make it the look like the inmate killed Williams and committed suicide to avoid the consequences. Teresi and James leave the scene for the guards to find the carnage.

When James was being processed to be released, Teresi visited him telling him to give the cellphone he had smuggled in the prison to Tommy. James questions why Teresi wanted to speak with Tommy so badly asking if he knew his father to which Teresi replied "You could say that". James pondered on Teresi's words before he realized his meaning and became shocked, these words seem to confirm he is Tommy's father. Teresi tells James to get the phone to Tommy or else he'd tell the guards what really happened to Williams before the guards tell Teresi to leave.