1994 Green Lantern story where the title character discovers his girlfriend's mutilated body in his refrigerator. Suicide Squad, Birds of Prey and other appearances (1989–2011) Yale and Ostrander oversaw the development of Barbara Gordon's new persona as Oracle for the next several years. The character made her first comic book appearance as Oracle in Suicide Squad #23, anonymously offering her services to the government's Task Force X. In the following two years, Oracle, under the pen of Ostrander and Yale, made guest appearances in various DC titles until her identity was revealed to be Barbara Gordon in Suicide Squad #38 (1990) and she officially becomes a member of the Squad in issue #48 following an invitation from Amanda Waller. In 1992, Dennis O'Neil wrote Oracle as Batman's sole source of information in Batman: Sword of Azrael #1. This newly forged partnership established Oracle's status as Batman's intellectual equal. She is subsequently featured in the 12-issue miniseries The Hacker Files (1993). In "Oracle: Year One"—a story arc contained in The Batman Chronicles #5 (1996)—Yale and Ostrander tell the origin of Barbara Gordon's new persona as Oracle. Initially, Gordon's paralysis plunges her into a state of reactive depression. However, she soon realizes that her aptitude for and training in information sciences have provided her with tremendous skills that could be deployed to fight crime. In a world increasingly centered on technology and information, she possesses a genius-level intellect; photographic memory; deep knowledge of computers and electronics; expert skills as a hacker; and graduate training in library sciences. One night, she has a dream in which an all-knowing woman (similar to the Oracle at Delphi of Greek mythology) has her face; it is then that she adopts "Oracle" as her codename. She serves as an information broker, gathering and disseminating intelligence to law enforcement organizations and members of the superhero community. She trains under the tutelage of Richard Dragon, one of DC's premiere martial artists, to engage in combat (using eskrima) from her wheelchair. She develops her upper-body strength and targeting skills with both firearms and batarangs. The success of Chuck Dixon's Black Canary/Oracle: Birds of Prey (1996) led to the comic series Birds of Prey starring the two title characters. During Chuck Dixon's crossover series Nightwing: Hunt for Oracle, Barbara Gordon and Dinah Lance meet in person and establish a long-term friendship. They form the nucleus of the Birds of Prey organization.