This recent entry in the Digimon Story series of video games featuring the eponymous legions of digital monsters was released worldwide in January 2018 for the PlayStation 4 as well as in October 2019 for both the Nintendo Switch and Microsoft Windows. Digimon Story: Cyber Sleuth - Hacker's Memory is a side-sequel to the well-received Digimon Story: Cyber Sleuth that builds upon the story as well as granting many new potential partners.

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Out of the hundreds of Digimon in this expansive game, there are only 11 Ultra-level beings of supreme power. These behemoths of binary coding are the strongest digital monsters with whom one can ally themselves in the game.

Updated on August 27, 2021, by Reyadh Rahaman: Partnering up with the very best Digimon in Hacker's Memory won't be a simple feat, as since they are all at the pinnacle of digital evolution, players will need to raise their partners and train them sufficiently, which can at times be more challenging than facing down some of the bosses in the main quests. Unlike in many other monster-partner RPGs, helping your allies achieve their greatest potential sometimes takes very specific stat requirements, which, in turn, will take a lot of training as well as Exp. Players will likely even have to use consumable items to boost a Digimon's stats in a certain direction due to the high requirements of some Ultra-level Digimon forms.

11 Armageddemon

Possessing the third-highest Intelligence stat in the game (150), Armageddemon is capable of dealing tremendous amounts of Magic damage to foes with decent skills.

However, their low HP stat (550) means they are undeniably a glass cannon meant for finishing blows rather than protracted battles, which limits their usability. They also, sadly, do not have any special moves which take advantage of their incredible Intelligence.

How To Get Armageddemon

The only way to acquire Armageddemon is to digivolve the Mega-level Diaboromon with some extremely unusual stats that emphasize needing a ton of HP and very high Attack despite Armageddemon's stats in these areas being very low for an Ultra-level Digimon.

Armageddemon Digivolution Stat Requirements​​​​​

10 Chaosmon & Chaosmon VA

This Digimon is one of those anomalies that should not really exist in terms of the lore, however, they can be fused from BanchoLeomon and a couple of other Mege-level options. The regular Chaosmon needs Darkdramon while Chaosmon VA needs Varodurumon. Both forms are geared solely for the offense with the highest Attack stats in the game.

Chaosmon has 255 Attack while Chaosmon VA has 205 and compensates with great Intelligence (155). Both versions come with excellent special attacks, though both also have incredibly low base HP (Chaosmon: 500, Chaosmon VA: 350), which means they cannot be relied upon for more difficult battles.

How To Get Chaosmon

Players must have both BanchoLeomon and Darkdramon in their party and must choose to digivolve one of them while they possess the correct stat requirements. It is recommended to use BanchoLeomon as the one to train and digivolve, as their naturally higher Attack stat will make things a bit easier.

Chaosmon Digivolution Stat Requirements

How To Get Chaosmon VA

Similar to regular Chaosmon, players will need both BanchoLeomon and another Mega-level Digimon in one's party, this time Varodurumon. The training for stats will be more awkward, though, as both of these Digimon have polarizing offensive stats, meaning that players will have to pump either a lot of Attack or Intelligence into one of them. With that said, BanchoLeomon is still the easier choice as the digivolution subject as Chaosmon VA's Attack requirement is higher than its Intelligence one.

Chaosmon VA Digivolution Stat Requirements

9 Alphamon Ouryuken

Formed from Alphamon and Ouryumon, this fusion combines their might to possess excellent stats all-around as well as a devastating attack that sets the bar for what the strongest Ultra Digimon in Hacker's Memory are capable of.

Their special move, Ultimate Ouryuken, is a Physical Defense-penetrating move that makes great use of this powerhouse's 130 Attack. However, since this maneuver costs a massive 50 SP per use and only targets a single foe, it can only be used sparingly.

How To Get Alphamon Ouryuken

Similar to other fusion Digimon mentioned, Alphamon Ouryuken will need both of the component Digimon in one's party, however, Alphamon is significantly easier to digivolve into this Ultra-level Royal Knight, as their stats line up much better with the digivolution requirements.

Alphamon Ouryuken Digivolution Stat Requirements

8 Belphemon RM

One of the Seven Deadly Digimon as well as the Ultra with the most Intelligence (170), Bephemon RM (short for Rage Mode) is an offensive threat unlike almost any other, and, dissimilar to Chaosmon, they have great Defense (110) and HP (1200), which makes them one of the best all-around Digimon in the game.

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Additionally, their special move, Gift of Darkness, is another powerful Physical Defense-penetrating one that makes great use of Belphemon RM's significant Attack stat of 184.

How To Get Belphemon RM

The only way to get Belphemon RM is to perform a mode change from Belphemon SM in the party menu (outside of combat). This Mega-level monster is one that players will need to acquire via either the Ultimate-level Wisemon or Digitamamon, the former of which is easier due to Wisemon's stat's lining up better with Belphemon SM's high Intelligence.

Belphemon SM Digivolution Stat Requirements

7 Imperialdramon PM

Appearing as a guardian and savior of the Digital World at times of strife, Imperialdramon PM (short for Paladin Mode) has some of the best well-rounded stats overall, even compared to other Ultra-level Digimon, which makes them very usable on any team needing a solid Vaccine-type or Light Attribute ally.

Their special move is a particularly unique one that deals 150 Physical Light damage to a single target that has a 30% chance to apply the Dot status effect, which renders the target unable to use any of their skills. This is a debilitating condition that can make any Intelligence-based rival harmless and forces the Attack stat-focused ones to only use basic attacks.

How To Get Imperialdramon PM

Players will need to train the Mega-level Imperialdramon DM (Dragon Mode) sufficiently in pretty much every stat to get it to meet the criteria for their Ultra-level form, which, won't be too difficult given Imperialdramon DM has very balanced combat parameters.

Imperialdramon PM Digivolution Stat Requirements

6 Apocalymon

This mighty Free-type Digimon is the result of all 4 Dark Masters (MetalSeadramon, Puppetmon, Machinedramon, and Piedmon) fusing together for a culmination of power that stands out for having the highest base HP in the game (1500) as well as excellent Intelligence (120) and Speed (130). Altogether, these great stats result in Apocalymon being one of the strongest Digimon that players can obtain in Hacker's Memory.

While this makes them an excellent Magic-based offensive ally, their special move, Darkness Zone, sets them apart from the other Ultras. This move deals a flat 444 damage to all enemies simultaneously, giving them the most reliable powerhouse maneuver in the game, albeit one that has a notable damage-ceiling.

How To Get Apocalymon

Interestingly, obtaining Apocalymon isn't nearly as difficult as one would assume from their place in the Digimon world's lore. The level requirement is as high as it can possibly be, however, there aren't really any specific stat requirements, so players can choose any of the 4 Mega-level Dark Masters to digivolve into the immensely powerful Ultra Digimon. Just be sure to have all 4 of the component digital monsters present in one's party.

Apocalymon Digivolution Stat Requirements

5 Gallantmon CM

Gallantmon CM (short for Crimson Mode) is the form of the contradictory Virus-type Digimon with a Light attribute Gallantmon who has ascended higher in strength to become Ultra-level. They possess great stats in every aspect, particularly SP (95) and Attack (140).

Quo Vadis, their special move, a Physical Light assault that penetrates Defense, has a 10% chance to outright kill the target instantly. This means that Quo Vadis is quite possibly the deadliest attack in the game if the user has a bit of luck on their side which, in turn, means that Gallantmon CM is potentially the best Digimon partner for offensive tactics.

How To Get Gallantmon CM

Understandably, the only way to get Gallantmon CM is to digivolve the Mega-level Royal Knight known as Gallantmon, which shouldn't be too challenging given the appropriate stat alignments.

Gallantmon CM Digivolution Stat Requirements

4 Examon

A colossal beast in terms of both appearance and stats, Examon has a great base HP (1200), SP (95), and Attack (130) which make them a useful offensive force in a majority of situations. Being of the Wind Attribute allows them to sit outside of the Light-Dark dual-super-effective mess that usually hinders the other Ultras, meaning that Examon is one of the best coverage Digimon in the end-game and post-game parts of Hacker's Memory.

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Possessing 2 awesome special moves also makes Examon a solid ally. Their single-target one, Pendragon's Glory, delivers 145 Physical Electric damage for only 25 SP per use; a powerful and efficient assault. Their all-target move, Draconic Impact, unleashes 100 Physical Fire damage at a cost of 50 SP; more expensive but devastating if one needs to severely strike multiple foes at once.

How To Get Examon

Odd for a Digimon emerging from a fusion, players can only digivolve Examon from the Mega-level Slayerdramon, as the other component, Brakedramon, cannot digivolve for an unexplained reason. Though, this isn't a big deal, as Slayerdramon would be the better out of the two to digivolve anyway thanks to more suitable stats.

Examon Digivolution Stat Requirements

3 Susanomon

Bearing the name of the Japanese god of storms, Susanomon is another Vaccine-type Ultra Digimon of the Light Attribute, but one that possesses superior special moves. Their all-around great stats are also typical of their archetype in the franchise, though support great offensive capabilities.

Celestial Blade is an all-target move that deals 110 Physical Light damage and always hits, meaning that it is a sure way to cleave at every enemy on the field without fail, and, at only 30 SP per use, it is a great technique to use consecutively. Their single-target one, Heaven's Thunder, unleashes a barrage of 8 Magic Electric strikes which each have a power of 20 for a cumulative total of 200 base power. This shocking maneuver also has a 30% chance to paralyze the target; an incredible tool for destruction at only 25 SP per use.

How To Get Susanomon

Geared toward offense more than anything else, players will need high Attack and Intelligence stats on either one of the fusion components for Susanomon, which are KaiserGreymon and MagnaGarurumon. The latter has a higher average between the Attack and Intelligence stats, meaning that MagnaGarurumon will be easier to train for the Ultra-level ascension.

Suasanomon Digivolution Stat Requirements

2 Omnimon & Omnimon Zwart

Both Omnimon (fused from WarGreymon and MetalGarurumon) and Omnimon Zwart (fused from BlackWarGreymon and MetalGarurumon [Black]) are Ultra Vaccine-type Digimon of incredible power with identical stats geared towards Attack while also possessing all-around top-tier stats, though, with the exception of their rather low 65 base SP.

The only real difference between these versions are their Attributes (Light and Dark respectively) and their inheritable skills. They both possess the tremendous special moves Transcendent Sword and Supreme Cannon, the former of which is a severe all-target assault that deals 115 Physical Fire damage for only 30 SP. The latter costs the same and is a single-target Magic Water move that is one of the few Intelligence-penetrating attacks, which is greatly usable on more mage-like enemies.

How To Get Omnimon

Players will need to follow the usual meeting of stat requirements and possessing all component Digimon for this legendary fusion, however, it should be mentioned that MetalGarurumon is better to train for this digivolution due to the higher average between their offensive stats and Speed meeting the desired criteria; the hardest factor of obtaining Omnimon.

Omnimon Digivolution Stat Requirements

How To Get Omnimon Zwart

Similarly, players will need to obtain Omnimon Zwart along parallel means, however, this Ultra-level monster needs Defense and HP more than it needs offensive stats. This results in BlackWarGreymon being the better candidate to train and digivolve due to their greater capabilities in these stats.

Omnimon Zwart Digivolution Requirements

1 Arcadiamon Ultra

The final form of the antagonistic Arcadiamon which the player must have a showdown with during the climax of the game, Arcadiamon Ultra possesses great stats all-around as well as immense Attack (155) which lets it unleash its overpowered special move with extreme prejudice.

God Matrix, arguably the best move in the game, hits all enemies simultaneously with Physical Neutral damage that both penetrates Defense and, more importantly, absorbs 10% of the damage dealt as HP to heal Arcadiamon Ultra. The move costs a hefty 50 SP, however, it is one that can bring the player back from the brink of defeat while also unleashing huge damage that is effective on every kind of foe. As such, this wicked signature move and Arcadiamon's excellent stats cement it as the strongest Digimon in Digmon Story: Cyber Sleuth - Hacker's Memory.

How To Get Arcadiamon Ultra

In addition to needing high overall stats, as well as monstrous Attack, players will also need to beat the game at least once in order to digivolve Arcadiamon Mega into Arcadiamon Ultra.

Arcadiamon Ultra Digivolution Stat Requirements

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