He'd only been a man in the shadows previously - the Suicide Squad operation to capture the new Swamp Thing that ended
in issue #8 had been instigated by him, and the events that'd culminated in that newly chosen avatar of the Green's becoming had come about through his company, Prescot Industries.
He knew that the new avatar of the Green, Levi Kamei, was an employee of his - and that Levi had a friend, Jennifer (introduced in
issue #1), likewise employed. He knew that Levi was confiding his experiences in her - so he brought her in, to lure in the prize he sought.
He, Harper Pilgrim, exposited to her as he waited.
( His exposition was mostly grandiose. )