Robo-scorpion

"Intruder, you will not escape the eyes of my Robo-Scorpions! Or their pincers!"

- Mobius

Robo-scorpion is a type of robot used in the Big MT 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 MT for security at the base, as robotic guardians, and they are now used by Dr. Mobius. According to him, they can form themselves from floor panels along with any other random parts lying around.

Variants
Robo-scorpions appear in Mk 1, 2, 3, 4, and 5 and come in blaster, stinger, and bomber variants as well as different sizes relative to their Mark. Their appearance in the game may depend on the following:
 * According to player level.
 * Importance of the area being defended.

All variants of the robo-scorpion can be disabled with the Robotics Expert perk, including the giant robo-scorpion. However, the giant robo-scorpion will restart itself after a set amount of time has passed.

Pincer Series

 * Robo-Scorpion pincer Mk1
 * Robo-Scorpion pincer Mk2
 * Robo-Scorpion pincer Mk3
 * Robo-Scorpion pincer Mk3b
 * Robo-Scorpion pincer Mk4
 * Robo-Scorpion pincer Mk5
 * Robo-Scorpion pincer Mk5b

Blaster Series

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

Bomber Series
They have the ability to become invisible due to the Stealth Boy integrated in them.
 * Robo-Scorpion Bomber Mk3
 * Robo-Scorpion Bomber Mk5

X-42 Giant Robo-Scorpion
Encountered in the X-42 Robo-Warfare Facility, the giant robo-scorpion is Dr. Mobius' ultimate creation, and the penultimate boss of Old World Blues. It has 3,000 hit points and 25.0 damage threshold, making it the single strongest killable enemy in Fallout: New Vegas (although this is somewhat mitigated by it being susceptible to Robotics Expert). It is interesting to note that if the turrets are activated and it is destroyed, they will continue to shoot at the spot where it was even after it has been blown up.

Notable quotes

 * "You're no match for science."
 * "I see you. Now, I end you"
 * "Prepare to be attacked by Dr. Mobius!"
 * "Go my minion, sting them in the name of all that is Mobius."
 * "Stop that, you'll damage the hull!"
 * "Ow!"

Appearances
Robo-scorpions appears 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.