Bloody Knuckle

The Bloody Knuckle is a radically high energy laser cannon mounted on the Maridia.  Using the near limitless energy potential of the Dark-Energy Reactor, the Bloody Knuckle can fire a concentrated beam of pure energy at a target area, vaporizing the molecular structure of everything it touches.  Capable of destroying a small moon, the Bloody Knuckle is not without drawbacks.  The weapon, when fired for long periods of time, will generate heat in excess of 10,000 degrees Centigrade, making short duration, long delay shots a necessity.  A typical blast from the Bloody Knuckle lasts 3-5 seconds for a tactical role and 7-10 for an assault role.  The longest the Bloody Knuckle can safely be fired is 20 seconds before critical system failures can result, causing catastrophic damage to the weapon and possibly the Dark-Energy Reactor.
The Bloody Knuckle is able to impale enemy capital ships and overpower energy shields in frighteningly short order.
The Bloody Knuckle's official name on paper is the 26"/1211 'Mk134 Mod 0'. It got it's moniker due to the fact that it's like one punches a wall so hard that it causes their knuckles to bleed. The weapon itself has been considered in some circles to be complete overkill for a ship based weapon but when it was proposed the goal of it was to achieve superiority over the space navies of neighboring Kaledon. While the GPOT-C still wouldn't fall for a few years after the weapon was drafted up, the need still remained. Dragonia plans to distribute this weapon among it's navy however the extreme cost of the cannon itself makes that prohibited as of this time. There is currently only one of the Mk134 Mod 0 devices in circulation. There is however an experimental prototype that is still sitting in the original factory which was the first iteration of the cannon itself. This weapon was taken and installed by Thundra on the Hyperion. It is called, simply, the Asteroid Destroyer.
At it's core, the Bloody Knuckle is basically a replica of one of the Fingers of God, which are the 8 outer cannons on the Space Catapult used as point defense and close in defense of the orbital platform. Recently they have been adapted for user in planetary attack scenarios due to the advent of space bending technology and someone figuring out a way to use it to rip a tear into space-time and teleport the beam to a target. It's devastating effects on planetary surfaces led researchers to develop ways to make it portable and making it into a ship based cannon was the most logical step. 
This provided a challenge though as the cannon itself was scaled down as much as it could be for efficient use and that meant the cannon was about 950 meters in length, which is a substantial portion of a Battleship's length. With further refinement and some help from Corsari energy weapon experts they were able to scale the weapon down further to about 800m, which was still an enormous piece of equipment. The cannon itself was bigger than some warehouse buildings. It was also enormously heavy, easily weighing over 1 million pounds. But all of that meant nothing as there wasn't a ship in the entire Grand Navy that could house this weapon. Many options were given in regards to how to fit it onto existing ships but it just wouldn't be possible. The simplest but most archaic solution would've been simply to attach the gun to a ship via a rig and just have it as some kind of external assembly but Palmon Jack vetoed that idea stating that Dragonian's were not savages and they were going to do it properly. The only remaining option was to design and build a completely new ship. A ship built AROUND the cannon with it's purpose being to use this cannon, everything else secondary. This led to the construction of the Maridia.
As design went into the ship and further refinements went into the weapon itself, another problem cropped up: power generation. Based on the amount of energy the Space Catapult generates for use in the weapon, the Finger of God still takes an unfathomable amount of energy to work properly. Every time one of the cannons fires, it uses around 8 Peta Watts Electric (PWe) of pure energy from the reactors on the station. That amount of energy was well outside of the capabilities of the commonly used dual plasma turbine reactors that were standard on Dragonian ships. It was in the realm of possibility of an Anti-Matter reactor however Dragonia had an vanishingly limited supply of it and preferred to keep it on the homeworld.
Grand-General Gearhart came up with the solution for that one. He mentioned that the GPOT-C was working on an experimental type of reactor called the Dark Energy Reactor which basically collects and uses the dark energy that is ever present in the universe. Using methods he was at a loss of words to explain, the basic concept is that it drew the energy out of space. But regardless of that, this meant that there was an essentially unlimited supply of energy that could be tapped to power the ship and this cannon. This required a lot of string pulling and behind the scenes dealing but Gearhart was able to secure the plans and technical specs for making this reactor and the Dragonians went to work. The concept was already proven by the GPOT-C although they didn't put much stock into developing the reactor as the ones they had were more than adequate. Dragonia was the first to create, test and verify it's operation. Once that was done, the ship was built around the cannon, the reactor was installed and the cannon was powered up. Now all that needed was for it to be tested.
The Bloody Knuckle performed better than initial projects even considered unlikely. The weapon performed almost to a T as well as the Fingers of God with just as much power. The quest to create a weapon as powerful as the Fingers but as mobile as a ship had been completed and with that a new era of naval warfare in the Dragon Protectorate. The Age of energy based ship weaponry had begun. The superiority of the Maridia and the Bloody Knuckle didn't last long as the Hyperion followed very quickly with a retrofitted and while inferior, equally effective weapon in the prototype Asteroid Destroyer.
The test revealed two things: The Bloody Knuckle uses so much energy and generates such a high amount of electromagnetic waves that it interferes with the Maridia. It causes the radar systems to temporarily scramble, which effectively blinds the ship for the duration of the cannon firing and for a bit afterward. It also, due to how the ship has a priority queue built into what gets power and when, drains power out of the engines of the ship, which slows it down while it's charging and firing the cannon.
The second thing was that the Dark-Energy Reactor has a strange quirk in how it operates when the cannon is in use. While it isn't noticeable in normal ship operation and if it is it's not a factor, when firing the Bloody Knuckle the beam fluctuates. It's not just a small amount either. While the beam has a defined width at least by design, the power fluctuations in the reactor are so severe that it causes the beam to expand to almost 3x it's normal size. This seems to be due to there being an uneven amount of Dark Energy in any given placed in the universe which means the reactor can't burn an even amount to make energy resulting in random fluctuations in the power going out of the reactor. These fluctuations though do cause the beam to do more damage so it's almost as if it's punching the target on rapid pulses with more power than others. It actually aids in the chipping away of the shields and armor of a target. This does put strain on the systems though, which causes them to wear more quickly.