Jeremiah Valeska

Jeremiah Valeska later known as Xander Wilde for a time, is one of the largest threats to face Gotham City. He is also the more obsessive and narcissistic identical twin brother of the nihilistic cult leader, Jerome Valeska. Supposedly suffering from years of abuse at the hands of his demented brother, Jeremiah was sent away from Haly's Circus where he enrolled in St. Ignatius. After graduating Jeremiah became a very skilled and intelligent engineer experienced in many branches, but he spent most of his years hiding in fear of his brother under the name Xander Wilde, knowing he would eventually come for him. After Jerome's death and being exposed to his altered chemical laughing toxin, Jeremiah became an the arch-nemesis of Bruce Wayne, who he idolized as his necessary opposite. He reduced the city to ruins, elevating himself to the status of a legend within the criminal underworld of Gotham City. His growing obsession with Bruce eventually sent him careening into a vat of chemicals during a brawl. He was severely disfigured and pronounced braindead, but resurfaced over a decade later more insane than ever, having trouble differentiating reality from fantasy in his past memories. He eagerly awaited Bruce Wayne's return to Gotham as the city's Dark Knight.