Mickey Finn (real name Txffu Mpwfs) was an Filari cyborg created by a race referred to as the Masters (usually referred to as "Cockroaches") to act as an advance scout. His mission was to evaluate planets the technology of planets the his Master (called The Beast) intended to incorporate into their domains. One evening Micky Finn ended up in Callahan's Place where he, with great effort, overcame hardwired prohibitions and hinted how he could be disabled. He later married Mary Callahan, daughter of Mike Callahan.