Jeremiah is a sane and intelligent engineer. His energy project for Gotham makes Bruce interested in his work, which results in Bruce offering him funds through Wayne Enterprises to build the generators and introducing himself as his friend. Jeremiah is twin brothers with Jerome, he is a psychopath who wants to kill Jeremiah and Bruce

Jeremiah and Bruce are best friends, they trust each other and they are very close. Jeremiah helps Bruce and Bruce helps Jeremiah, that’s how it works. Bruce sorta has feelings for Jeremiah but he tries to think of him as just a friend… but can’t really

Right now Bruce and Jeremiah are working together on a project to stop Jerome from destroying Gotham

“So Jeremiah, you need help with anything here? I mean I’ll be happy to help a friend with anything” Bruce smiles a bit as he watches Jeremiah work