Characters of Halo

Recurring characters of Halo are organized below by their respective factions in the fictional universe. The multimedia franchise's central story revolves around an interstellar war between future humanity under the auspices of the United Nations Space Command or UNSC, and an alien theocratic alliance known as the Covenant. The artifacts left behind by an ancient race known as the Forerunner play a central role, particularly the massive weapons, dubbed Halos, built to contain the parasitic Flood. Beginning with developer Bungie's 2001 video game Halo: Combat Evolved, the franchise expanded to include numerous sequel video games, novels, comics, and other works.

In the foreword for a collection titled The Art of Halo, Bungie founder Jason Jones noted that bringing together the elements of a video game is unmistakably "art". However, Jones also noted that the character designers and artists had to make a "living, breathing world" and populate it with interesting characters and places. The game's development which spanned four years brought numerous evolutions and revisions to the character's designs and personalities. Characters were also updated to take full advantage of new graphics technologies; for instance, the Master Chief's armor was redesigned in a lengthy conceptual process and the final model was bump mapped. Each video game offered opportunities to refine the character's appearances and design.

Halo's commercial and critical success has led to large amounts of merchandise featuring the franchise's characters to be produced. The Master Chief, the most visible symbol of the series, has been heavily marketed, with the character's visage appearing on soda bottles, T-shirts, and Xbox controllers. Other merchandise produced includes several sets of action figures, produced by Joyride Studios and McFarlane Toys among other manufacturers. Halo's characters have received varying reception, with characters such as the Chief, Cortana, and the Arbiter well received by critics.

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