Petras

Petras was the director of Overwatch.

Story
Seven years before the present day, Director Petras ordered a full investigation into the murder of an Overwatch official in Cairo, Egypt.

On the 27th day of the Kings Row Uprising, Director Petras sought to urgently speak with Strike-Commander Morrison, but was put on hold as Morrison executed an unsanctioned mission to end the situation in London, England.

Trivia

 * Petras is likely a reference to Bill Petras, the art director for Overwatch.
 * It is likely the Petras Act which dissolved Overwatch was named after Petras.
 * On the Deathmatch map Château Guillard, wine bottles labeled "PETRAS" can be seen near the wine cellar, and on the desk. It is unknown whether or not this has any correlation to Director Petras, or the deathmatch map Petra.