He presents himself as a more reasonable counterpart to Amanda Waller , allowing Oliver and the Yamashiros to go free after their mission in Hong Kong is completed .
Shrieve appears as the main antagonist in the third season 's flashbacks .
Shrieve presents himself as a more reasonable counterpart to Amanda Waller , allowing Oliver and the Yamashiros to go free after their mission in Hong Kong is completed .
Shrieve appears as the main antagonist in the third season 's flashbacks .