For the majority of the series however, Oz appears identical to Jack when he was fifteen. Though he'd originally only resided within Jack's body because he'd lost his own, Oz's power has since altered Jack's body and made it his own - even appearing within his subconscious as he does in Jack's body rather than his own. As such, Oz is now seen as a 15 year old boy measuring at 164cm tall, with emerald green eyes (though his eyes do return to their original red form when Oz accesses his power) and golden blonde hair. In this form, Oz often wears a a white dress shirt, a gray vest and black tie, shorts, socks, shoes and overcoat. Additionally, with his powers reinstated, Oz bears the of an Illegal Contractor over his heart; being a red brand of sorts shaped like a clock that's made at least 6 progressions.
As B-Rabbit, Oz appeared as a massive anthropomorphic rabbit that retained his black fur and red eyes. However, in his new form Oz was clad in a larger version of the outfit Alice provided him when she brought him to the . This outfit was a red overcoat with a white collar and diamonds formed in a line going down the arm to white cuffs that ended triangularly; all while maintaining the bow Oz had since his creation.
In April 2015, a group of 10 physicians from across the United States, including Henry Miller, a fellow in scientific philosophy and public policy at Stanford University's Hoover Institute, sent a letter to Columbia University calling Oz's faculty position unacceptable. They accused Oz of "an egregious lack of integrity by promoting quack treatments and cures in the interest of personal financial gain." A spokesman for Oz questioned the integrity and qualifications of the accusing physicians.