Peruvian 0-8-4

"My country commissioned that weapon decades ago. After the fall of HYDRA, many scientists followed their Nazi friends to hide on this side of the world." "German engineering." "The weapon was lost during a clash in the jungle until today."

- Camilla Reyes and Phil Coulson

The Peruvian 0-8-4 was the code given by S.H.I.E.L.D. to the Tesseract-powered weapon discovered in Peru in 2013.

Lost
This Tesseract-powered piece of technology was developed by a group of former HYDRA scientists after World War II. It was made for the Peruvian government who wanted to use it against the rebels. However, during the battle in which it was used, the weapon was lost, probably because of the instability of the energy that powered it. The weapon ended up inside the undiscovered Incan temple, partially stuck in one of the walls. Because of its placement in fossiliferous rock formations of the wall the weapon looked like it was stuck there for at least 1500 years.

Rediscovered
"This temple dates back at least 500 years. It's filled with pre-Incan artifacts. One of them is impossible."

- The Archaeologist to Phil Coulson

In 2013, a group of archaeologists discovered the temple. After finding the "impossible artifact", their leader informed S.H.I.E.L.D. about the discovery. A group of agents led by Phil Coulson was sent to examine and retrieve the object.

However, a group of Peruvian soldiers under the command of Camilla Reyes also came to reclaim the weapon. As the expedition was attacked by the rebels, the agents and soldiers took the weapon and escaped on the Bus. During the journey, the soldiers turned against Coulson's team so they could take the weapon, but they were ultimately defeated. Since it was deemed to be a very dangerous technology, the weapon was sent to the Slingshot for disposal.

In HYDRA's hands
"Hey, guys! I found it. Told you it'd be in here."

- Phil Coulson

However, the weapon wasn't destroyed as originally thought; it was later used by the reborn HYDRA during its war on S.H.I.E.L.D. in 2014 after being stolen from the Fridge by HYDRA agents John Garrett and Grant Ward.

They used the weapon as a cutting tool to free the prisoners in the Fridge and to cut a hole into the floor to find the Gravitonium.

Later, Ward mentioned the weapon in his ruse to kidnap Skye, so she could access encrypted information from her hard drive for the Centipede Project.

After Garrett was defeated by Deathlok, Phil Coulson used the weapon to finally execute Garrett, and took possession of it, storing the weapon in the Playground.

Specifications
According to Agent Leo Fitz's report, the weapon was fueled by a unknown power source and isotopes. It emits chart-breaking Gamma Radiation. Its emitter amplified its power, creating a beam over 2 terajoules in magnitude.