Henry had originally been a secret admirer of Serena when the Steins still reigned supreme in the business world.
He could only look at her from afar and marvel at her 'perfection'.
But he couldn't work in the Steins so he went to work in Ultio with the thought that if he got to a high position and the company started thriving, he would be able to boldly approach Serena.
But Ultio did not even need to thrive much before Serena set her eyes on him. His face was nice to the eyes, great body build and also, he looked timid.
He looked fun to play with, according to Serena.
Serena had her fun with him and toyed with his feelings but he did not resent her. Instead, he was even more infatuated by her. Rather, he was in love with her.
He was in love with a devil who had no remorse for others' sufferings and only cared for what she'd gain.
Thus, he wanted to be useful to her.
