For the Evulz: Nemesis tells Blake that he is the son of two complete psychos Blake busted and sent to their deaths but it's all lies. The son in question died before the story even began. Nemesis is just some rich, bored guy looking for kicks as a supervillain.
The Mole: He has been working for Nemesis for the past eight years
Our Presidents Are Different: When Blake is faced with a Sadistic Choice, the President or his wife, both of whom are rigged with explosives, the President enforced a third option. He gets in Nemesis' face and orders Blake to blow him up.