The Vale's foster son is a minor character in Batman: The Telltale Series. Real name unknown, he was the foster son of John and Patricia Vale, and foster brother of Vicki Vale. After his parents were murdered by his foster sister, he hid until being discovered by Batman. He later saved the vigilante's life and was taken away by the GCPD.
Not much is known about the boy's past, including his name, who his parents were and the reason why he was surrendered to Child Support Services. The only information that is known is that he was eight years old by the time of the Vale's murder and had been living with them for some time. It can be assumed that he was, like the other children they adopted, abused by them, ranging from beatings with a belt to being kept in a makeshift torture chamber for days. He seemed to have a good relationship with his adopted sister, as a photo of them can be seen in her lair under Arkham Asylum.
When Vicki returned home, the boy was under the stairs, having either hid there or been forced underneath by the Vales. Whilst there, he heard his foster mother argue with Vicki about using her father's warehouse to stockpile the Arkham Drug and their brutal murder at her hands. After Vicki left, he stayed hidden for approximately another ten hours.
When Batman came to investigate the residence, having been told to talk to the Vales by an Arkham inmate, the boy stayed hidden throughout the investigation. However, he accidently made a noise, either having returned to his hiding spot or do so accidently. Batman found him, using his thermal vision, and tried to talk to him. Depending how the vigilante acts, the boy will either cower in fear, refusing to talk to him, or will inform the vigilante about what he heard. Regardless, the vigilante helped him out of the room.
When attacked by a drone operated by the Penguin, Batman protected the boy from gunfire and drew its attention away from him. However, when the vigilante was left vulnerable after one of his gadgets malfunctioned, he attacked it with a baseball bat. This distracted Penguin long enough for Batman to destroy the drone. After its destruction, he saw the Vale's mutilated corpses. If Batman has acted kindly towards the boy, he will thank him for saving his life and promise him a debt.
As the GCPD arrived, led by Lt. Gordon, Batman handed the boy over to them, asking that they took care of him. As he is taken away by Sgt. Montoya, the boy will either praise Batman for saving him or ask to be taken away, depending on how the vigilante acted. He was later handed over to Child Services, where he was checked to see whether he was injured and help recover from the trauma. However, his future was uncertain by both officials and the press.