The original Exelion Class was the first 4th generation battleship built by Humanity from Gunbuster. It is approximately seven kilometers long and armed with broadside lasers, photon torpedoes, fighters, mecha and is generally escorted by a moderately large fleet. It was first deployed to Leaf 64 where it engaged in combat with Space Monsters. It was also instrumental in the Battle of the Absolute Defense Line though not as a combat vessel.

For the Galactic Core battle it is likely the Exelion Class was upgraded considerably in terms of both survivability and firepower. Though it fulfills the role of escort rather than the fleet's main battleship. These feats will be marked with [X/Galactic Core].

Some feats in the Durability section were done while the Exelion was unmanned. These feats are marked with [X/Unmanned]. When thinking about these feats consider that these only apply to the survivability of the hull, engines and degeneracy reactor as those are the only things that we know still worked up until the end.

Weapons Systems

Lasers

The Exelion's main weapon are it's broadside lasers.

• [Power] The Exelion along with it's escorting fleet's fire a broadside create an explosion that is likely larger than a planet as the target is 1.8 light seconds away.

• [Range] Engages a target at 1.8 light seconds.

• [Firing Arc] It's cannons can change the angle which they fire.

• [Point Defense] The Exelion is also equipped with some smaller rapid firing lasers for point defense.

• [Power/Galactic Core] A group of Exelions mass scatter a gas giant in addition to destroying a number of Mothership class Space Monsters (which are 1000km in diameter).

• [Targeting/Speculation/Galactic Core] It is possible that the GC Exelions were outfitted with homing lasers like Gunbuster.

Photon Torpedoes

Photon torpedoes are some kind of missile system they don't have a lot of feats.

• [Power] A small group of torpedo create some large explosions but fail to do any damage to a Space Monster.

  • [SM Durability] Space Monsters are born inside stars and would have the durability that comes with that kind of thing.

• [Power/Speculation/Galactic Core] It is possible with the upgrades it's torpedoes were upgraded to what Gunbuster was using which is able to destroy a space monster.

Fighters and mecha

The fighters and Machine Weapons have next to zero feats.

• A wing of Cosmo Attacker V fighters engage a group of Space Monster Grunts.

• Machine Weapons are equipped with Californium bombs (for scale that mech is 10 meters tall).

  • Here is one being used on a Space Monster Grunt.
  • IMPORTANT NOTE: Unlike the larger Space Monsters, Grunts are not born in Stars so they lack that durability feat.

The Exelion was also equipped with one Gunbuster (though it was incomplete when it was first used).

• Gunbuster RT at some point.

Galactic Core Exelions would have been equipped with Sizzlers rather than Machine Weapons.

• Sizzler RT at some point.

Self Destruct

• The Exelion's Self Destruct will form a moderately large black hole that sucks in everything within 80 AU.

• Here is it in action.

Mobility

• [Acceleration] The Exelion is able to keep up with Buster Machines 1 and 2 as they accelerate close enough to the speed of light that relativistic time dilation is very significant over the course of around six minutes from their frame of reference.

• [Acceleration/Low end] Makes a gravity turn around a star with the acceleration implied by the previous feat there would be zero reason to do something like this.

• [Speed/Character Statement] Noriko says they are moving at billions of kilometers per hour. One Billion kilometers per hour equals about 93% the speed of light

• [Speed] Quickly flies past Jupiter.

• [FTL] Is able to go from Earth to Leaf 64 which is in the Perseus Arm of the galaxy (one arm spinward from Earth). The amount of time it takes isn't clear but it is vaguely short.

  • Here is the visual of the Exelion and it's fleet warping.

• [FTL/Galactic Core] Makes it to the Galactic Core also don't know how quickly.

• [FTL/Limit] The Exelion can not make short range jumps. At the time the Space Monsters were 34 minutes away.

• [FTL/Limit] Warping must be done in "calm" areas of space

Durability

• [Physical/Unmanned] Falls into rather than get spaghettified by the black hole it creates inside of itself during it's self destruct.

• [Physical/Unmanned] Takes minor damage from Gunbuster slamming into the Exelion after it just folded a large Space Monster in half along with blowing up a bunch of others. Though it is definitely possible that Gunbuster did some kind of retro thrusting just before impact that we do not see.

• [Energy] There are several feats like this where it gets hit by a Space Monster energy attack that makes a large explosion. It only took 3-5 hits to essentially cripple the ship.

  • The only feat for Space Monster Firepower I know of is a cruiser class ship firing a shot through the moon Titan. Though isn't really possible to say if they were the same weapons system.

• [Physical/Unmanned/Limit] Gets impaled by two large spike space monsters.

  • In the past Space Monsters have been known to regularly fly around at fractions of the speed of light (notice the red/blue shifting on the SM as it flies past).
  • These spikes later explode.
  • Note that after the explosion the holes don't seem especially enlarged.

• [Physical/Limit/Galactic Core] One gets destroyed after getting rammed by a large Space Monster.

  • Note: this kind of Space Monster with it's ramming/self destruct attacks was able to break Buster Machine 3's shields in two waves where each wave numbered in the billions of Space Monsters.
  • BM3's shields are rated at 10⁵⁸ GeV which is equivalent to 16000 Foe. One Foe is approximately the energy released by an average supernova.

• [Energy/Galactic Core] Survives being in the periphery of the Eltreum's broadside.

  • The Eltreum is a 70 km long super battleship, it should probably be at least not incomparable to the group of Exelions that mass scattered a gas giant (also notice the similar stylistic shadows being cast by the Space Monsters that are getting destroyed in this part and the Exelions in the previous gif).