Jason Beck is a criminal and mechanical mastermind in "The Big O".
After being defeated by Roger Smith during the kidnapping case, Beck's further appearances on the show consist of his trying to defeat Roger. However, his plans continually degrade from sinister and dangerous to almost comical in nature.
Beck becomes Alex Rosewater's agent in "Twisted Memories" after Alan Gabriel threatens him with an order of execution, but is unhappy with this situation despite a successful attack on Roger. Thus, he betrays Rosewater and ends up aiding Roger in the last episode by telling Dorothy how to activate Big O's Final Stage.
While his intention is unknown, he is known to use Dorothy as the key factor in his plans, including making her a core of his machines. He continuously tries to humiliate Roger after the failed kidnapping attempt. He tries to erase the memories of the Megadeus as these make him feel unpleasant.
His betrayal from Alex Rosewater and his final appearance which he sarcastically laughs when Big O surfaces after being dropped into the sea might indicate Beck is consistent on trying to "ridicule the whole show", if "the show" refers to Dan Dastun's view on Paradigm City being an orchestrated show. It means Beck might know he was assigned to be a comical relief and was unhappy about it, and therefore resorts to foiling the show and corrupt Roger's stance as "Professional Negotiator" while complying to the comical behavior. His dissatisfaction on successfully helping Alex might stem from he was developing the plot unintentionally despite of disagreement on it. It is unknown if Beck truly wants to help Roger by telling Dorothy how to activate Big O's Final Stage, but its apparent result of breaking both Big O and Big Fau and subsequent appearance of Big Venus may be desired, which might link to his desire to "erase the memories of Megadeus".