In the Halo games, Cortana is a female artificial intelligence construct who can even exhibit emotion. She was a partner with John-117 during many of his combat missions, and became his constant companion, as well as holding important data relating to the Halos.
Unfortunately she was briefly thought to be dead, which left John emotionally upset by the ordeal, but luckily for gaming fans and John both, Cortana returned with a whole new adventure on her mind, hoping to bring her vision of peace to life.
This witty and charming character has long been popular with Halo fans, and she’s a great choice for any cosplayer.
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