Hall Billions, Bobby Axelrod's Best Private Investigator in the Show The following blog post will look into the character Hall from billions, whose full name is I don't believe is something that is ever disclosed within the show, so for now we'll just refer to him as Hall. I really like Hall as a character overall in that he is very straightforward, he is fearless, and he is tough, and while he is one strange human being, he is definitely not [...]