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Bug is a fictional character, a superhero appearing in American comic books published by Marvel Comics. Bug was originally a member of the Micronauts and later joined the second incarnation of the Guardians of the Galaxy.
When he first appeared in Micronauts issue 1 (dated January 1979), Bug was also known as Galactic Warrior, taking this name from a figure from the Micronauts toy line on which the comic book series was based. The toy based characters were all owned by Takara Co., Ltd., with any original characters owned by Marvel. Starting with the fourth issue the Galactic Warrior's title was dropped. This was done after Marvel realized that since the character's design looked nothing like the toy, they could assume ownership if they used a different name.
Powers and abilities
Bug can cling to walls and has exceptional agility. He has extraordinary sight, with enhanced peripheral vision gained by wearing his helmet. His antennae enable communication with others bearing antennae, and provide heightened sensory awareness with a limited degree of danger sense. 
Master thief of the Insectivorid race! Feisty and fearless, he's a galactic warrior at home with any manner of weapon! - Marvel Comics
1979 Marvel Comics
Bug appeared as a featured character throughout Micronauts original run, starting from the first issue until issue 59 (dated August 1984), the series' final issue.
Bug is a master thief from the Insectivorid home world Kaliklak based in the Microverse. Bug was a joker and rogue by nature but always a professional when it came down to the job. He and Acroyear shared a unique friendship as the two were diametrical in personality. Bug's friendship with Acroyear may have been responsible for Acroyear's decision to question the sometimes overly cold warrior ethic that ruled his people.
When the Micronauts breached the space wall to escape Baron Karza they arrived on Earth, where they discovered they were about 6 inches tall compared to the native human population.
Bug was affectionately called "my Galactic Warrior" by a girl who loved him (Treefern) in issue 56.
Months later Marvel restarted the series with Micronauts: The New Voyages issue 1 (dated October 1984) with Bug once again appearing as a featured character. This second series lasted until issue 20 (dated May 1986).
Shortly after the second Marvel Micronauts series ended Commander Rann, Marionette, Fireflyte, Acroyear and Bug appeared in M'ndens Bar in New Mutants number 50.
In the 1990s Marvel began plans to launch a new series starring the Micronauts, despite the fact that they no longer held the publishing rights to the toy based characters. Assuming that Abrams Gentile Entertainment (the company that, at the time, owned the American rights to the Micronauts toy line) would agree to this new series, Marvel hired Shon C. Bury to write the series and Cary Nord to draw it. 
Bug returned in 1998 in the pages of Alpha Flight volume 2 number 10 and 11 when Alpha Flight traveled to the Microverse and ended up on Homeworld. The Champions of the Microverse lead by Arcturus Rann fought against Baron Zybek. The group included Bug, Mary and Dexam and used the Endeavor as the based of operations. The freedom fighters and Alpha Flight defeated Baron Zybek.
Bug would later appear with the other Marvel owned Micronauts (now named the Microns) in issues of Captain Marvel in 2000 and 2001.
Bug had a full biography printed in the All New Official Handbook of the Marvel Universe A to Z issue 2 from 2006.
Bug did not make any further appearances until 2007. At this point he appeared alone, without any of the other Microns, as a prisoner of the alien race the Kree. He was then recruited into a hastily assembled covert team led by Star-Lord. His activities at this point were depicted in the limited series, Annihilation: Conquest - Star-Lord and in the subsequent limited series Annihilation: Conquest. He was then a recurring character in the second volume of Guardians of the Galaxy, which spun out of the events portrayed in Annihilation: Conquest.
Although Bug was not a founding member of the "modern" Guardians team, Rocket Raccoon asked him to join when the original group disbanded after some internal misunderstandings. Bug agreed, and fought alongside the Guardians as they attempted to stop the Shi'ar-Kree interstellar conflict known as the War of Kings. Although they failed, Bug stayed with the Guardians as they dealt with the war's aftermath in the Realm of Kings storyline through the series' end with issue 25 in 2010. Bug appeared as a member of the Guardians in Avengers Assemble issues 4-8 in 2012.
- Shapeways Microclone Bug (2019)
- 1:72 scale figure based on Bug released on Shapeways.
- Cronin, Brian Comic Book Urban Legends Revealed #153, Comic Book Resources, May 1, 2008
- Cronin, Brian Comic Book Urban Legends Revealed #160, Comic Book Resources, June 19, 2008
- The Lost Micronauts: The Un-Told Story of the Micronauts Re-Launch...That Never Left the Launching Pad, Innerspace Online, February 2, 2007
- Live GUARDIANS OF THE GALAXY Interview with Chris Pratt, James Gunn and Kevin Feige - AMC Movie News