Question: The character "Storm" who was featured in the comic "Uncanny X-Force" first appeared in what comic, created by writer Len Wein and artist Dave Cockrum?
Context: Nightcrawler (Kurt Wagner) is a fictional superhero appearing in American comic books published by Marvel Comics, commonly in association with the X-Men.  Created by writer Len Wein and artist Dave Cockrum, he debuted in the comic book "Giant-Size X-Men" #1 (May 1975). Mongul is the name of two fictional characters that appear in comic books published by DC Comics.  Writer Len Wein and artist Jim Starlin created the first version of the character, who debuted in "DC Comics Presents" #27 (Nov. 1980).  Writer Peter J. Tomasi and artist Scot Eaton created the second version, who first appeared in "Showcase '95" #8 (Sept. 1995) as an infant. The Swamp Thing (Dr. Alec Holland) is a fictional character and antihero in comic books published by DC Comics.  He is a humanoid/plant elemental creature, created by writer Len Wein and artist Bernie Wrightson.  Swamp Thing has had several humanoid or monster incarnations in various different storylines.  He first appeared in "House of Secrets" #92 (July 1971) in a stand-alone horror story set in the early 20th century.  The character then returned in a solo series, set in the contemporary world and in the general DC continuity.  The character is a swamp monster that resembles an anthropomorphic mound of vegetable matter.  He fights to protect his swamp home, the environment in general, and humanity from various supernatural or terrorist threats. Brother Voodoo (Jericho Drumm) is a fictional character, a supernatural superhero appearing in American comic books published by Marvel Comics.  He first appeared in "Strange Tales" #169 (Sept. 1973).  The character was created by writer Len Wein and artist Gene Colan.  Since replacing Doctor Strange as Sorcerer Supreme in "The New Avengers" #53 (July 2009), the character is referred to as Doctor Voodoo. Cottonmouth is a fictional character appearing in American comic books published by Marvel Comics.  Created by writer Len Wein and artist George Tuska, the character first appeared in "Power Man" #18 (June 1974). Giant-Size X-Men #1 was a special issue of the "X-Men" comic book series, published by Marvel Comics in 1975.  It was written by Len Wein and illustrated by Dave Cockrum.  Though not a regular issue, it contained the first new X-Men story in five years.  The issue serves as a link between the original X-Men and a new team.  Chronologically it is placed after "X-Men" #66 and before "X-Men" #94.  The 68-page book was published with a May 1975 cover date and distributed to newsstands in February of that year. Storm (Ororo Munroe) is a fictional superhero appearing in American comic books published by Marvel Comics, commonly associated with the X-Men.  The character first appeared in "Giant-Size X-Men" #1 (May 1975), and was created by writer Len Wein and artist Dave Cockrum. Colossus is a fictional superhero appearing in American comic books published by Marvel Comics.  He is the alter ego of Pyotr "Peter" Nikolayevich Rasputin (Russian: Пётр Николаевич Распутин).  Created by writer Len Wein and illustrator Dave Cockrum, he first appeared in "Giant-Size X-Men" #1 (May 1975). The Brood are a fictional race of insectoid, parasitic, extraterrestrial beings appearing in American comic books published by Marvel Comics, especially "Uncanny X-Men."  Created by writer Chris Claremont and artist Dave Cockrum, they first appeared in "Uncanny X-Men" #155 (March 1982). Uncanny X-Force was a comic book ongoing series published by Marvel Comics.  Created by writer Rick Remender and artist Jerome Opeña, the first volume of the series continued the story of Wolverine and his X-Force team from the series "X-Force," vol.  3.  The title was relaunched after issue #35 as part of the Marvel NOW!  relaunch event, and the new volume features Psylocke and Storm leading a new team of "outcasts and scoundrels".  The second volume was one of two X-Force ongoing titles, along with "Cable and X-Force".
Answer: "Giant-Size X-Men" #1