BOB

The BOB is a special type of enemy encountered in Halo: Reach. The BOBs take the form of yellow/gold-armored Sangheili Rangers. Killing one of the BOBs will reward the player the "Seek and Destroy" medal. However, the medal can only be viewed on Bungie.net. In the post-game carnage report, the BOB is referred to as a "light Elite vehicle".

The name "BOB" is a reference to Bungie's Marathon video game series. In the series, all of the encountered human characters, besides the player, are known as "BOBs". "BOB" is an acronym for "Born on Board", a reference to the characters having been born onboard the titular colony ship.

Trivia

 * Each BOB has a set time limit which the player has to kill him before he vanishes. For some BOBs, this time frame begins as soon as he is alerted to the player's presence, but for others, the countdown begins once the player enters a certain area, with it being possible for the player to miss the BOB entirely if they do not reach him quickly enough.