Here is a complete glossary for the Digimon that appeared or are mentioned in this story:
Demijoshuamon
Family: Nature Spirits
Level: Rookie
Attribute: Vaccine
Attacks: Icicle Smash; Cryo Shield; Icy Wind
Prior Forms: Frostmon
Next Forms: Joshuamon, Phantomjoshuamon
Demijoshuamon is a fun loving little bunny with an appetite as big as his final evolution. When he isn't eating or fighting the forces of some evil Digimon, he can be found watching TV or reading some book with Joshua.
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Joshuamon
Family: Nature Spirits; Virus Buster
Level: Champion
Attribute: Vaccine
Attacks: Spirit Arm; Cryo Slash; Cryo Shield
Prior Forms: Demijoshuamon
Next Forms: Megajoshuamon
Joshuamon is a fierce and formidable Digimon. It is rumored that his 'Spirit Arm' technique rivals that of WarGreymon's Nova Force. The only ones who can confirm this are currently on ice.
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Megajoshuamon
Family: Nature Spirits; Virus Buster
Level: Ultimate
Attribute: Vaccine
Attacks: Frost Touch; Freeze Burn
Prior Forms: Joshuamon, Phantomjoshuamon
Next Forms: Icedragonmon
Megajoshuamon is one Digimon you'd rather have as an ally. If his 'Frost Touch' technique doesn't put you on ice, his 'Freeze Burn' will.
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Icedragonmon
Family: Nature Spirits; Virus Buster
Level: Mega
Attribute: Vaccine
Attacks: Ice Claw; Frost Bite; Cold Wave
Prior Forms: Megajoshuamon
Next Forms: Blizzarddramon
Icedragonmon is rumored to have flight capabilities that outmatch Hououmon.
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Blizzarddramon
Family: Nature Spirits; Virus Buster
Level: Mega
Attribute: Vaccine; Data
Attacks: Ice Blast; Freezing Slash; Freezing Whirlwind; Dramon Ice Shield
Prior Forms: Icedragonmon
Next Forms: NeoBlizzarddramon
A Legendary Dragon Digimon that embodies the spirit of honor. It will only help those with a strong sense of honor.
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NeoBlizzarddramon
Family: Nature Spirits; Virus Buster
Level: Mega
Type: Vaccine; Data
Attacks: Absolute Zero; Freezing Rainbow; Ice Blade Strike
Prior Forms: Blizzarddramon
NeoBlizzarddramon wields the Paladin Blade. Embodying the spirit of honor, NeoBlizzarddramon won't attack an opponent that can't defend themself.
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Agumon
Level: Rookie
Type: Reptile
Attribute: Vaccine
Family: Nature Spirits; Virus Busters; Metal Empire; Unknown
Size: 20.0 G
Prior forms: Koromon
Next forms: Greymon
A Reptile Digimon. It is a short and stout Tyrannosaurus rex-like Digimon standing about 3 feet tall, and has amber orange skin and light green eyes. It also has flattened forearms with broad, three-clawed hands though some have been seen that have hands with four claws, and distinct pectoral muscles. Its legs and arms are shown to be very vascular. Its tail is stubby, and its head and snout are almost as large as the rest of its body.
Attacks:
Pepper Breath; Claw Attack; Spirit Fire (Spitfire); Cross Fire (Cross Fight); Battle Hawk; Triple Bird Flame (Triple Baby Flame): Performs "Pepper Breath" alongside two other Agumon, fusing the three flames into a gigantic fireball.
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BlackAgumon
Level: Rookie
Type: Reptile
Attribute: Virus
Family: Nature Spirits
Prior forms: Pagumon
Next forms: BlackGreymon
Attacks: Pepper Breath; Spitfire
BlackAgumon is a Reptile Digimon. Having grown up and become able to walk on two legs, it has an appearance like a tiny dinosaur. Because it is still on the way to adulthood, its power is low, but as its personality is quite ferocious, it doesn't understand fear. It has grown hard, sharp claws on both its hands and feet, and demonstrates its power in battle. It is also a being that foretells digivolution to a great and powerful Digimon
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Greymon
Level: Champion
Type: Dinosaur
Attribute: Vaccine
Family: Nature Spirits; Metal Empire; Virus Busters; Dragon's Roar
Size: 30.0 G
Prior forms Agumon; Agumon (2006 anime)
Next forms MetalGreymon (Vaccine);MetalGreymon (Virus);SkullGreymon
Greymon is a Dinosaur Digimon whose name is derived from "grey" and whose design is derived from the Ceratosaurus. Its cranial skin has hardened so that it is covered in a rhinoceros beetle-like shell. It is an extremely aggressive Digimon, with a rough disposition and a body like a lethal weapon, covered in sharp claws and gigantic horns which tear through everything. As for why a Dinosaur Digimon is in the Metal Empire, it seems to still be a mystery. It is highly intelligent for its appearance, and if you're able to tame it then there probably isn't any monster as strong. The Greymon that inhabit the Folder Continent don't have frenzied personalities, and because of their great intellect they are able to use fighting styles that rely on cooperation and coordinated attacks with their comrades.
Attacks: Nova Blast; Great Horns Attack; Grey Tooth; Great Tooth; Horn Impulse; Tail Crash; Fire Wall
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BlackGreymon
Level: Champion
Type: Dinosaur
Attribute: Virus
Family: Nature Spirits
Prior forms: BlackAgumon
Next forms: MetalGreymon (Virus)
BlackGreymon is a viral Greymon, more blue than actually black.
Attacks: Nova Blast (Mega Flame); Great Horns Attack (Great Antler); Grey Tooth
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MetalGreymon:
MetalGreymon (Vaccine)
Level: Ultimate
Type: Cyborg
Attribute: Vaccine
Family: Nature Spirits; Metal Empire; Virus Busters; Dragon's Roar
Size: 40.0 G
Prior forms: Greymon
Next forms: WarGreymon; AncientGreymon; Omnimon
* (w/ WereGarurumon)
MetalGreymon (Vaccine) is a Cyborg Digimon whose name and design are derived from "Metal Greymon". It has mechanized more than half of its body. The MetalGreymon of Folder Continent are Cyborg Digimon that succeed in perfectly digivolving from Greymon, and draw out a stronger power which cannot be compared with those of File Island. In order to evolve to MetalGreymon, it must be successful in defeating the enemies who come against it, one after another. Also, MetalGreymon's offensive power is said to equal that of a single nuclear warhead, and if the likes of a low-level Digimon suffered that blow, it would be annihilated without leaving a trace. Its "Trident Arm" is made from enhanced Chrome Digizoid.
MetalGreymon (Virus)
Level: Ultimate
Type: Cyborg
Attribute: Virus
Family: Metal Empire
Prior forms: Greymon; BlackGreymon
Next forms: BlackWarGreymon
MetalGreymon is a Cyborg Digimon whose name and design are derived from "Metal Greymon". It is the strongest Cyborg Digimon, and after going through numerous battles, it was able to survive by mechanizing more than half its body. The MetalGreymon of File Island were able to drastically extend their vital functions through remodeling, but their flesh portions could not hold out and were discolored blue. Also, its offensive power is said to equal that of a single nuclear warhead.
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SkullGreymon
Level: Ultimate
Type: Skeleton; Undead; Ghost
Attribute: Virus
Family: Nightmare Soldiers
Size: 40.0 G
Prior forms: Greymon
Next forms: BlackWarGreymon
SkullGreymon is a Skeleton Digimon whose name and design are derived from "Skull Greymon". It was a Digimon that put too much importance on fighting, and as a result of its combat instinct it clung to life despite its body rotting away, its whole body becoming nothing but bones. As it doesn't have even a scrap of intelligence to balance its combat instinct, its existence is a threat to other Digimon.
Attacks: Dark Shot; Double Dark Shot; Curse Breath
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WarGreymon
Level: Mega
Type: Warrior; Dragon Man; Dragon
Attribute: Vaccine
Family: Metal Empire; Virus Busters; Dragon's Roar
Size: 20.0 G
Prior forms: MetalGreymon (Vaccine)
Next forms: Omnimon * (w/ MetalGarurumon); VictoryGreymon[6]
WarGreymon is a Dragon Man Digimon. The strongest dragon warrior, with a body clad in armor of the super-metal "Chrome Digizoid", it is the ultimate form of Greymon-species Digimon. Though it differs from the gigantic figure seen in Greymon-species Digimon, and has the form of a Man-type, it has rapidly improved its speed and power, and it is likely impossible to defeat it with the attacks of an Ultimate Digimon. The "Dramon Killers" equipped to both of its arms exhibit immense power against Dramon-species Digimon, while simultaneously being a double-edged sword that completely endangers itself. Also, when the shells equipped on its back unite into one, they become the "Brave Shield", which is the strongest and toughest shield. It is said that the moment that a true hero, among all the mighty that have been through many battles, awakens to its own mission, it digivolves into WarGreymon
Attacks: Terra Force(Gaia Force); Great Tornado; Brave Shield; Mega Claw (Dramon Killer); Dragon Killer
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VictoryGreymon
Level: Mega
Type: Dragon Man
Attribute: Vaccine
Family: Dragon's Roar
Prior forms: RizeGreymon; WarGreymon
VictoryGreymon is a Dragon Man Digimon whose name and design are derived from "Victory Greymon". A subspecies of WarGreymon, whose body is clad in armor of the super-metal "Chrome Digizoid", it easily wields its gigantic crushing sword "Dramon Breaker", and is the "Dragon Warrior of Heroes" that fights against its opponents with unique sword techniques. Furthermore, VictoryGreymon possesses an evolutionary code that differs from Digimon that were naturally born in the Digital World, and it is thought that it is a Digimon that digivolved from a Digi-Egg that was produced due to artificial data intervention.
Attacks: Dramon Breaker; Trident Gaia; Victory Charge; Victory Shield
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AncientGreymon
Level: Mega
Type: Ancient Dragon
Attribute: Vaccine
Family: Unknown; Nature Spirits; Virus Busters
Prior forms: MetalGreymon
AncientGreymon is an Ancient Dragon Digimon whose name and design are derived from "Ancient" and "Greymon". It possesses the attribute of "Flame", and is one of the legendary "Ten Legendary Warriors" that saved the ancient Digital World. It is told that its strength surpasses that of current Megas, and it is certainly a "Mega" being. Its abilities were later passed on to the "Dragon Digimon" of the Greymon-species. It is said that in the previous crusade, it survived to the end alongside AncientGarurumon, and sealed away Lucemon.
Attacks: Gaia Tornado; Omega Corona
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BlackImperialdramon
Level: Mega
Type: Ancient Dragon
Attribute: Virus
Family: Metal Empire
BlackImperialdramon is an Ancient Dragon Digimon.
Attacks: Mega Crusher (Mega Death); Positron Laser
BlackImperialdramon Fighter Mode
Level: Mega
Type: Ancient Dragon Man
Attribute: Virus
Family: Metal Empire
BlackImperialdramon Fighter Mode is the virus counterpart of Imperialdramon Fighter Mode.
Attacks: Giga Death; Positron Laser