Hathaway Noa is a romantic, delusional, angry, and vengeful person. Growing up in turmoil times and not having a stable life. Hathaway lived a misguided life, especially with a career soldier as a father. After falling in love with Quess Paraya, he did everything he could to help her. Even though she made it obvious she's attracted to Amuro Ray, Hathaway always believed she had feelings for him as well. When Char took Quess, he was so obsessed in saving her that he was willing to break any rules and even kill people if they got in his way to be with Quess. When Chan Agi accidentally killed Quess during a MS battle, he was overwhelmed with anger and resentment against the Earth Federation and adults. He would live out his remaining life, loathing the Federation and taking action against them.
Hathaway later gave himself a new identity, Mafty Navue Erin, and piloted his own advanced Gundam to attack the Federation. He joined a anti-Federation crew called Mafty and the group caused trouble to the Federation controlled colonies. It was a ironic life-decision as his father, Bright Noa, was a dedicated Federation officer and was obligated to arrest and prosecute Mafty. Towards the end of his life, when he was trialled and sentenced to death by the Federation, Quess' spirit came to make it clear she never loved him. It was only then, in his final moments of life that he realized his actions in her name had always been in vain.