Stuart Lowe, also known as 2-D Man, was a character from the DC animated series Batman Beyond. Appearing in the episode "Heroes", he was a friend and colleague of Dr. Michael Morgan and his fianceé Mary Michaels. Together, the three of them were involved in a laboratory incident that left them transformed and possessing metahuman powers, leading to them forming a superhero team known as the Terrific Trio. Lowe was voiced by Jeff Bennett.
Stuart Lowe was a victim of Dr. Howard Hodges's orchestration to eliminate Mike Morgan so that he could have the hand of Morgan's fianceé, Mary Michaels, to himself. It remains unclear whether Lowe was intended to be in the accident alongside Morgan, or was just a collateral victim. Regardless, the radiation that the trio were exposed to did not kill them, but instead greatly altered their atomic structure. Lowe's body became two-dimensional and he gained the ability to stretch himself to tremendous lengths.
Initially, Lowe, Morgan and Michaels chose to use their newfound powers for good, forming the government-sponsored team of heroes known as "The Terrific Trio" becoming overnight stars. Despite the fame and praise they received, however, the three were depressed by the fact that they could never again return to their normal lives. Worse still, the process that was used to give them their powers was soon discovered by Hodges to have a degenerative mental effect over time - a fact of which the Trio was unaware.
Growing increasingly insane, the Trio confronted their "friend" Hodges, only to discover the truth behind their transformations. Enraged and betrayed, Lowe and his teammates went on a rampage, and were about to take revenge on Hodges before Batman intervened, and ultimately subdued them. 2-D Man was pulled into the emergency ventilation system of the Bay Ridge Research Center. It is unknown if he died or not.