Amanda Waller, Bruce's acquaintance from his days with the Justice League, who reveals that she engineered his origin to create a replacement Batman for Bruce Wayne. Terry learns that Bruce is his biological father; Waller used nanotechnology to ensure that Bruce Wayne's DNA overwrote the DNA in Warren McGinnis's reproductive cells. She had intended to take things one step forward and recreate the tragic circumstances that drove Bruce into becoming Batman (by hiring The Phantasm to murder the young boy's parents in front of him), but her hired assassin refused at the last minute. In conclusion, Waller tells Terry that while he does not possess Bruce's level of deduction and analytical skills, he does possess the same heart. Initially disillusioned with who he was, Terry eventually reconciles with the truth and continues to have a relationship with Bruce, while also planning on proposing to his longtime girlfriend, Dana Tan. He is also revealed to have joined the Justice League, but like Bruce before him, he is only a part-timer. Project Batman Beyond In the Justice League Unlimited episode "Epilogue", which takes place 15 years after Batman Beyond, in which Terry has become a remarkable superhero in his own right, and discovers the shocking truth about his paternity. When Bruce requires tissue for the cloning of a kidney to transplant, Terry is checked for compatibility. To his surprise, his DNA is similar to Bruce's. After hesitating for a time, he runs a DNA test and finds out that Bruce is his biological father. Terry tracks down Amanda Waller, the only person in the world he believes can answer his questions. As he does so, he imagines scenarios where he leaves the people vital to himself because he believes his life was a lie. Terry vents some of his frustration about Bruce and his plans to Waller, only to be surprised when Waller reveals that it was not Bruce responsible for Terry's genetic makeup – it was her doing, without Bruce's consent or even his express knowledge. Decades earlier, Waller was the government liaison to the Justice League and she slowly began to realize and believe that Batman was the most capable person in the League; despite not having any powers, his willpower, body strength, and acute intelligence made him the most balanced and reliable fighter in the entire League. Because of this, Waller slowly began to respect and trust Bruce Wayne.