Robo-scorpion

Robo-scorpion is a type of robot used in the Big Empty in 2281.

Background
The robo-scorpions are robots that bear a strong resemblance to radscorpions. They are yellow and red in color. The United States Armed Forces created these robots in the Big Empty for security at the base, as robotic guardians.

Variants
Robo-scorpions appear in Mark 1, 2, and 3, there appearance in the game may depend on the following:
 * According to player level.
 * Importance of the area being defended.
 * Similar to the Small (Mk1), 'regular' (Mk2) and Giant (Mk3) Radscorpion (Fallout: New Vegas) giving a random encounter.

In addition, they also come in blaster or stinger variants as well as different sizes. Also, a giant pincer version is seen in the Old World Blues trailer.

Pincer Series

 * Robo-Scorpion pincer Mk1
 * Robo-Scorpion pincer Mk2
 * Robo-Scorpion pincer Mk3
 * Robo-Scorpion pincer Mk4
 * Robo-Scorpion pincer Mk5
 * Giant robo-scorpion pincer

Blaster Series

 * Robo-Scorpion blaster Mk1
 * Robo-Scorpion blaster Mk2
 * Robo-Scorpion blaster Mk3
 * Robo-Scorpion blaster Mk4
 * Robo-Scorpion blaster Mk5

Appearances
Robo-scorpions appear in the Fallout: New Vegas add-on Old World Blues.

Behind the scenes

 * The robo-scorpion is based on the Scorpitron of Wasteland, the 1980s game which is considered to be Fallout's predecessor.