Fan Casting Dr. Kirk Langstrom in The Last Vengeance of Bane

Dr. Kirk Langstrom, the Man-Bat, is the alchemist of survival and a mirror of perpetual return. With trembling, dignified exhaustion, he has retreated to a remote cottage in the Scottish Highlands after decades of fighting the beast within—a serum that transforms him into a feral bat-creature against his will. Bane seeks him out for a detox protocol, and Langstrom provides it alongside a devastating warning: "I have flushed the serum from my blood one hundred and thirty-seven times. Each time, I believe I am free. Each time, I am wrong." He is proof that the poison never truly leaves; it lives in the marrow, in the memory, in the need. His brief transformation, fought back through sheer will, is the film's most visceral depiction of addiction's eternal return.