Ms. Male character game trope - where female characters are made simply as a counterpart to the male character. Commonly the male character is used as a default and then given a bow to define the female version of the character.
Misty was the first non - DLC based female character to be introduced into the 'Nazi Zombies' sub-game in Call of duty - Black Ops 2. She was used to advertise the game itself rather than her male counterparts. As it is shown from the image here she is quite sexualised and in the game itself she is quite ditsy or dumb acting compared to her smarter male counterparts.