Undercover (Stingers)

The Undercover unit are the protagonists of Stingers, a division of Victoria Police, and later a sub-division of the Special Investigations squad, established to investigate and infiltrate criminal organizations to take down suspects.
The Undercover unit was formed by Bernie Rocca prior to the events of Stingers, and the unit at the start of the series consisted of Rocca as Head of the unit, his second-in-command Ellen "Mac" MacKenzie, the unit's main operatives Angie Piper, Peter Church, and Oscar Stone, and new recruit Kaye Kelso. Out of the original members of the unit, only Angie and Church remained by the end of the series, by which stage the unit was part of the Special Investigations squad led by Luke Harris, and consisted of Angie, Church, Harris, Christina Dichiera, and Leo Flynn.
==Members==
===Original Members (at the start of Stingers)=== 
*Bernie Rocca - Detective Senior Sergeant - Head of the unit
*Ellen "Mac" MacKenzie - Detective Sergeant - Unit supervisor
*Peter Church - Senior Constable
*Angie Piper - Constable
*Oscar Stone - Constable
*Kaye Kelso - Constable
===Current Members (as of the series finale)===
*Luke Harris - Detective Inspector - Head of Special Investigations (Suspended as of the series finale)
*Peter Church - Senior Constable - Acting Head of Special Investigations (Briefly resigns from the unit at the end of season one, but rejoins the unit at the start of season two; Later became Acting Head of Undercover from the end of season five until the start of season six, and again as Acting Head of Special Investigations in the series finale following Harris' suspension)
*Angie Piper - Detective Senior Constable (Briefly transferred to the Homicide unit later in season seven following her marriage to Harris, but rejoins the unit some time later)
*Christina Dichiera - Constable (Joins the unit in season six)
*Leo Flynn - Constable (Joins the unit in season seven)
===Former Members===
*Kaye Kelso - Constable (Leaves the unit early in season one, after being kidnapped and mutilated during her last investigation)
*Susan Abbott - Detective Senior Sergeant - Acting Head of the unit (Briefly joined the unit near the end of season two, to command the unit in place of Rocca following his shooting; Leaves the unit at the end of the season, due to Rocca's brief return to the unit)
*Bernie Rocca - Detective Senior Sergeant - Head of the unit (Retires from the police force at the end of season two for family reasons, after surviving being shot by Anthony Howarth)
*Oscar Stone † - Constable (Killed on duty late in season five, after being shot by Kieran Frances Conrad while protecting Church)
*Ellen "Mac" MacKenzie - Detective Senior Sergeant - Head of the unit (Resigns from the unit shortly after taking long-service leave at the end of season five)
*Danni Mayo - Constable (Joined the unit at the start of season three; Resigned from the unit in season six, after clashing with Harris due to him witholding crucial information that jepordized her investigation)
*Megan Walsh - Constable (Transferred from the Drug Squad halfway through season eight; Arrested by Church and Harris later in the season for her corrupt activities)
==Allies==
*Bill Hollister † - Detective Inspector / Detective Senior Sergeant - Homicide unit (Killed in season four by a car bomb)
*Reg Masters - Detective Senior Sergeant - Vice Squad / Drug Squad
*Brian Gray - Detective Senior Sergeant - Armed Robbery / Special Investigations
*Samantha Piper † - Angie's younger sister (Murdered in season eight by Kepler Vanderbijl)
*Eric Chatterly - Detective Senior Sergeant - Fraud Squad / Homicide unit
*Marty Engle - Angie's informant, and later fiancée (Went into witness protection at the end of season five)
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