<Ul> <Li> Johnny Whitworth as Markos ( season 1 ) , a mysterious man connected to Jane 's past . He was killed by an initially unknown sniper -- later revealed to be Oscar -- in Jane 's safe house . It is later revealed that he was a member of Sandstorm but grew disenchanted with their treatment of Jane . </Li> <Li> Jordana Spiro as Sarah Weller ( season 1 ) , Kurt 's sister . Sarah tries to heal Kurt 's lingering emotional trauma from Taylor Shaw 's disappearance , as well as repair the broken relationship between Kurt and their terminally ill father . She was in love with Kurt 's co-worker and friend , Edgar Reade , until he breaks up with her to protect her and her son . </Li> <Li> Logan Schuyler Smith as Sawyer ( season 1 ) , Sarah 's son and Kurt 's nephew . </Li> <Li> Michael Gaston as Thomas `` Tom '' Carter ( season 1 ) , CIA Deputy Director , who is connected with Mayfair to the clandestine Operation Daylight . He is strongly interested in Jane due to concerns that her tattoos could reveal Daylight 's existence . He was killed by Oscar while trying to interrogate Jane . </Li> <Li> Joe Dinicol as David Wagner ( seasons 1 and 3 ) , Patterson 's boyfriend . Patterson broke up with him after being reprimanded for sharing the tattoos with David . He was killed by a Russian agent for investigating an undercover spy ring , but reappeared in Patterson 's coma dream in season 3 . His character was modeled after David Kwong , who works as a puzzle consultant for the show . </Li> <Li> Jay O. Sanders as Bill Weller ( season 1 ) , Kurt and Sarah 's father , who was accused of kidnapping and killing Taylor Shaw because he lied about his alibi , resulting in the destruction of his life and marriage and the end of his relationship with his son . He is terminally ill with lung cancer . Later , he admits he was attempting suicide the night of Taylor 's disappearance , finally earning Kurt 's trust back . However , he confirms on his deathbed that he genuinely did kill Taylor Shaw , although his words imply that it was accidental . </Li> <Li> François Arnaud as Oscar ( season 1 ) , a mysterious man connected to Jane 's past . Partial flashbacks have revealed Oscar is Jane 's ex-boyfriend and they planned to marry , but Jane broke off the engagement . Although he appeared to be Jane 's ally against some of the radical elements of Sandstorm , the terrorist organization that gave Jane her tattoos , it was later revealed that he lied to her about her past identity as Taylor Shaw , and seemingly harmless tests were actually part of a complex scheme to frame Mayfair for murder and corruption . When he attempts to inject Jane with a new dose of drugs to erase her memory again , Jane attempts to arrest him , but accidentally stabs him in the heart with a scythe as they fought in a burning barn . </Li> <Li> Lou Diamond Phillips as Saúl Guerrero ( season 1 ) , a notorious gang leader and Number Two on the FBI Ten Most Wanted Fugitives list , who is connected to Operation Daylight , serving as the ' official ' source of the information Mayfair gained from the program . He was killed on Tom Carter 's orders while in prison . </Li> <Li> Trieste Kelly Dunn as Allison Knight , a former FBI agent , now a U.S. Marshal and FBI WITSEC liaison . She is Kurt 's ex-girlfriend , who attempted to restart their relationship . She and Kurt have a daughter , Bethany . </Li> <Li> John Hodgman as Jonas Fischer ( season 1 ) , a Chief Inspector in the FBI Office of Professional Responsibility who was maneuvering to replace Mayfair . He was later exposed as a Russian agent and killed by Jane while attempting to frame her as the mole in his place . </Li> <Li> Ennis Esmer as Rich Dotcom ( real name Gord Enver ) , a former computer programmer turned Internet crime lord . Eccentric and manic , Rich often embroils Weller 's team in elaborate , convoluted schemes to achieve his goals . In season 3 , he begins working with the FBI . </Li> <Li> Josh Dean as Boston Arliss Crab , an art restorer who is Rich Dotcom 's partner in crime and ex-boyfriend . </Li> <Li> Sarita Choudhury as Sofia Varma ( season 1 ) , Deputy White House Political Director ,
<Ul> <Li> Johnny Whitworth as Markos ( season 1 ) , a mysterious man connected to Jane 's past . He was killed by an initially unknown sniper -- later revealed to be Oscar -- in Jane 's safe house . It is later revealed that he was a member of Sandstorm but grew disenchanted with their treatment of Jane . </Li> <Li> Jordana Spiro as Sarah Weller ( season 1 ) , Kurt 's sister . Sarah tries to heal Kurt 's lingering emotional trauma from Taylor Shaw 's disappearance , as well as repair the broken relationship between Kurt and their terminally ill father . She was in love with Kurt 's co-worker and friend , Edgar Reade , until he breaks up with her to protect her and her son . </Li> <Li> Logan Schuyler Smith as Sawyer ( season 1 ) , Sarah 's son and Kurt 's nephew . </Li> <Li> Michael Gaston as Thomas `` Tom '' Carter ( season 1 ) , CIA Deputy Director , who is connected with Mayfair to the clandestine Operation Daylight . He is strongly interested in Jane due to concerns that her tattoos could reveal Daylight 's existence . He was killed by Oscar while trying to interrogate Jane . </Li> <Li> Joe Dinicol as David Wagner ( seasons 1 and 3 ) , Patterson 's boyfriend . Patterson broke up with him after being reprimanded for sharing the tattoos with David . He was killed by a Russian agent for investigating an undercover spy ring , but reappeared in Patterson 's coma dream in season 3 . His character was modeled after David Kwong , who works as a puzzle consultant for the show . </Li> <Li> Jay O. Sanders as Bill Weller ( season 1 ) , Kurt and Sarah 's father , who was accused of kidnapping and killing Taylor Shaw because he lied about his alibi , resulting in the destruction of his life and marriage and the end of his relationship with his son . He is terminally ill with lung cancer . Later , he admits he was attempting suicide the night of Taylor 's disappearance , finally earning Kurt 's trust back . However , he confirms on his deathbed that he genuinely did kill Taylor Shaw , although his words imply that it was accidental . </Li> <Li> François Arnaud as Oscar ( season 1 ) , a mysterious man connected to Jane 's past . Partial flashbacks have revealed Oscar is Jane 's ex-boyfriend and they planned to marry , but Jane broke off the engagement . Although he appeared to be Jane 's ally against some of the radical elements of Sandstorm , the terrorist organization that gave Jane her tattoos , it was later revealed that he lied to her about her past identity as Taylor Shaw , and seemingly harmless tests were actually part of a complex scheme to frame Mayfair for murder and corruption . When he attempts to inject Jane with a new dose of drugs to erase her memory again , Jane attempts to arrest him , but accidentally stabs him in the heart with a scythe as they fought in a burning barn . </Li> <Li> Lou Diamond Phillips as Saúl Guerrero ( season 1 ) , a notorious gang leader and Number Two on the FBI Ten Most Wanted Fugitives list , who is connected to Operation Daylight , serving as the ' official ' source of the information Mayfair gained from the program . He was killed on Tom Carter 's orders while in prison . </Li> <Li> Trieste Kelly Dunn as Allison Knight , a former FBI agent , now a U.S. Marshal and FBI WITSEC liaison . She is Kurt 's ex-girlfriend , who attempted to restart their relationship . She and Kurt have a daughter , Bethany . </Li> <Li> John Hodgman as Jonas Fischer ( season 1 ) , a Chief Inspector in the FBI Office of Professional Responsibility who was maneuvering to replace Mayfair . He was later exposed as a Russian agent and killed by Jane while attempting to frame her as the mole in his place . </Li> <Li> Ennis Esmer as Rich Dotcom ( real name Gord Enver ) , a former computer programmer turned Internet crime lord . Eccentric and manic , Rich often embroils Weller 's team in elaborate , convoluted schemes to achieve his goals . In season 3 , he begins working with the FBI . </Li> <Li> Josh Dean as Boston Arliss Crab , an art restorer who is Rich Dotcom 's partner in crime and ex-boyfriend . </Li> <Li> Sarita Choudhury as Sofia Varma ( season 1 ) , Deputy White House Political Director ,
who plays kurt weller 's father on blind spot
who plays kurt weller 's father on blind spot
Jay O. Sanders
Jay O. Sanders