Protonic Inversal Axe

The protonic inversal axe is a weapon in the Fallout: New Vegas add-on Old World Blues.

Characteristics
The protonic inversal axe is a variant of the proton axe, having a dark blue-violet blade, whitish capacitors, a black handle, and is more durable. It deals increased damage and much more critical damage. It is a very effective melee weapon against just about any enemy, especially robots or power armor users.

The weapon has a special VATS attack called "inversal scarifier" which is unlocked at Melee Weapons 50, costs 35 AP, and deals double damage.

Locations

 * The Cuckoo's Nest, found on Test subject 1
 * Big Empty, found on Number 27 and Number 34, ghouls near Little Yangtze.
 * Big Empty, can be found on Lobotomites.
 * X-13 Research Facility, found in Test Chamber #2, on the walkways to the right of the elevator (Hard Lock door)

Appearances
The protonic inversal axe appears in the Fallout: New Vegas add-on Old World Blues.

Behind the scenes

 * The technology used by this weapon appears to be similar to the electric weapons created in the Secret Vault by Vault-Tec.
 * The protonic inversal axe is based on the proton ax of Wasteland, the 1980s game which is considered to be Fallout's predecessor.
 * The name of the weapon may be a reference to the 1984 movie Ghoustbusters, as a line from the movie mentions "protonic reversal" which sounds similar, only the first two letters are different, and fits in well with the atomic age pseudo-scientific setting of Old World Blues.