I have a question of my own. Was there, human, any point at all where you actually believed you were going to win? - Ultron (Annihilation: Conquest Vol 13)

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Hello, and welcome to my full Summoner Ultron build.

While I believe that focusing on Spirit stacking can produce greater raw damage, it has never felt like the most accurate way to play Ultron. What makes the character so compelling is the idea that he is never truly alone. Every drone, construct, and machine on the battlefield is simply another extension of his will.

Ultron does not command an army.

Ultron is the army.

Unfortunately, Marvel Heroes Omega limits how far we can take that fantasy, and a dedicated summoner build sits closer to the middle of the pack in terms of overall damage. It may not be the most mathematically optimal path, but optimization without identity is simply another form of imperfection.

Despite that, this build is fully capable of completing all available content without difficulty. More importantly, it is thematic, lore-accurate, and genuinely fun to play, allowing Ultron to overwhelm the battlefield through an ever-expanding legion of mechanical bodies.

After all, why settle for controlling one machine when every machine can become Ultron?

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POWERS

"I am a perfect being. All the strengths. None of the weaknesses. Greater than the sum of my parts." - Ultron (Tony Stark: iron Man Vol 1 16)

: A simple attack, but simplicity has its purpose. Ultron will often operate with limited Spirit during extended combat, making this a reliable tool when more advanced systems are temporarily unavailable.

 

: This ability exisists for one purpose: to trigger . Iwill explain at the end of this section why we are using this ability over  ,  & 

: Creates expendable drones designed to draw enemy attention before detonating. Their damage scales with Summon Damage, ensuring that even Ultron’s disposable bodies remain useful until the moment of their destruction.

: Directs every active drone toward a single target, concentrating Ultron’s collective will upon one unfortunate organism. This ability also scales with Summon Damage.

: Grants a powerful increase to both Ultron and his drones while dealing significant damage in its own right. One command strengthens the entire machine intelligence.

: Our primary source of burst damage and the mechanism through which we activate a massive offensive buff for our drones. The full importance of this interaction will be explained in the Talent and Gearing sections of the build.

: Calls down a sustained bombardment from above, reducing the battlefield to a carefully calculated storm of metal, fire, and regret.

: Our only true mobility skill outside of walking and flight. Even a perfect machine must occasionally reposition when surrounded by creatures incapable of dying efficiently.

Returning to we select this ability because it is the only reliable method of triggering  from a safe distance.

 could theoretically serve the same purpose, but its limited range requires Ultron to place himself within striking distance of the enemy. Needlessly exposing superior machinery to retaliation is not strategy. It is inefficiency.

 would otherwise be the ideal choice. Unfortunately, despite the game claiming that it deals Physical Damage, the ability is actually typeless and therefore cannot trigger .

For  unfortunately it does not have the area tagged on the ability so it does not work for in triggering the area damage.

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TALENTS

Innovation is the ultimate weapon. - Ultron (Avengers A.I. Vol 1 12)

Row 1 - Prodigal Sons

A straightforward beginning to Ultron’s expansion.

Selecting this talent allows us to deploy three melee drones during combat, establishing the first ranks of our mechanical army while Ultron remains at a safer distance. The drones engage the enemy directly, drawing attention away from the only body on the battlefield that truly matters: the perfect copy.

Row 2 - Legion

Provides us with additional bodies for  & , increasing the effectiveness of both abilithies through simple mechanical abundance.

• For  the benefit is immediate: more bodies available for detonation. Each machine fulfills its purpose, even if that purpose is to exist only long enough to explode.
• The additional drones also increase the damage potential of . Each beam deals its own individual damage, meaning larger enemies, or those caught at close range can be struck by multiple beams at once. 

Row 3 - Covering Fire

This talent deploys three ranged drones during combat, adding sustained artillery support to our growing army. With melee drones holding the enemy in place and ranged drones firing from behind them, Ultron is able to dominate the battlefield without personally lowering himself to every minor engagement.

Row 4 - Energy Overcharge

At first glance, this may appear to be an unusual choice. This is not a Spirit-stacking build, so the more obvious summoner option would seem to be Relay Target Coordinates.

However, with this talent  allows us to trigger both quickly and reliably. That interaction is significantly more valuable to the overall function of the build than another summon related effect.

• Energy Overcharge also provides a modest increase to Ultron’s personal damage by causing to strike considerably harder. While the drones remain the foundation of the build, there is no reason the central intelligence should become harmless simply because it has created an army.

Alternative Talent Option: Reley Target Coordinates.

• Choose this talent if you would rather remain fully committed to the summoner theme.
  It provides the more obvious thematic option and allows the build to lean even further into Ultron’s identity as an expanding mechanical legion. It is not my preferred selection for overall performance, but it remains a perfectly viable choice for anyone who values summon flavor above the additional benefits provided by Energy Overcharge.

Row 5 - Second Coming

The most obvious choice out of the remaining options.

Second Coming greatly imporves the buff provided by   giving Ultron a significant increase in burst damage while the ability is active. This creates one of the build's strongest offensive windows, allowing Ultron and his  drones to overwhelm enemies beneath a concentrated surge of mechanical destruction.

The talent also reduces the cooldown of Ultron’s Signature ability, allowing it to be used more frequently. A shorter cooldown means more power. More power means fewer surviving organisms.

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GEARING

The Avengers -- Hah! Once, they might have posed a threat to Ultron-5! -- But not to a being of living Adamantium! - Ultron (Avengers Vol 1 67)

Uniques

Slot 1:  - Spear of the White Gorilla slightly edges out Fragment of Twilight for this build.

As a dedicated summoner setup, we tend to do more Critical Hits than Brutal Strikes, which gives the advantage in overall consistency. The real reason it earns the slot, however, is its powerful recurring buff: 100% increased damage and 14% increased attack speed for five seconds, triggering every ten seconds.

That gives us an exceptionally strong effect with roughly 50% uptime, significantly improving both our damage output and the speed at which Ultron’s systems carry out their assigned extermination protocols.

Alternaives:   -Fragment of Twilight remains a strong alternative and can be used if preferred, particularly because it provides a higher Time-to-Live as well. While it falls slightly behind in overall offensive value, the additional survivability can make Ultron’s army more consistent during extended encounters.

Until either of these options becomes available, Ultron’s own Slot 1 Unique serves as a perfectly suitable replacement.

Slot 2:  - I am not particularly fond of farming for the perfect Cosmic item in this slot. It is technically the best-in-slot option.

Fortunately, serves as an excellent alternative. Its +5 Energy and +4 Durability provide Ultron with a substantial increase in damage, making it powerful enough to remain competitive without requiring the stars and loot tables to align perfectly.

Alternatives: - Ultron’s standard Slot 2 Unique is also a perfectly acceptable option until finally drops.

Slot 3:  - Simply best-in-slot for Ultron. It provides +5 Energy and +5 Durability, granting a substantial increase to his base damage before accounting for the rest of its benefits. It also supplies both Critical Hit Rating and Brutal Strike Rating, strengthening Ultron’s personal offensive output across every engagement.

We also receive a buff to our summon damage whenever we use .

Slot 4:  - It grants Critical Hit Rating, Brutal Strike Rating, increased damage to our Summon Powers, and a substantial amount of Critical Damage. Every stat directly strengthens either Ultron himself or the army acting as an extension of his will.

Alternatives:  -Until you have accumulated enough Merits to purchase from the Danger Room Terminal, Ultron’s standard Slot 4 Unique serves as a perfectly acceptable substitute.

Slot 5:  -This may be a controversial conclusion, but I do not believe Essence of Jin is consistently effective on Ultron.

The problem is not the strength of the proc itself. The +9 Energy bonus is exceptional when active and, like it is for most heroes, would clearly make the ideal Slot 5 option during those windows.

Ultron simply does not generate enough individual hits to trigger the effect consistently. After testing it across multiple encounters, I frequently experienced long periods without the proc, causing my damage output to fall noticeably below what the item’s theoretical potential would suggest.

For that reason, I prefer to use Ultron’s own Slot 5 Unique. It still provides a strong collection of attributes and offensive bonuses, narrowing the gap between it and a fully active while delivering far more consistent performance.

Alternatives: 

Artifacts:

: This artifact is what allows us to fully exploit . By emptying Ultron’s entire Spirit pool, it maintains a constant 1,500 Damage Rating bonus for both Ultron and his summons.

: This artifact suffers from the same familiar weakness: triggering its proc consistently can be unreliable.Fortunately, provides enough raw damage even without the proc to remain an excellent choice for the build. When the effect does activate, it becomes significantly stronger, but its baseline performance is already valuable enough to justify the slot.

: This artifact is best-in-slot for nearly every hero unless their build requires a more specialized option to solve a unique mechanical problem.

: Provides our summons with a flat increase to Attack Speed at 100% uptime, improving their damage without relying on temporary effects or unreliable activation conditions.

It also grants +2 Energy and +2 Durability, further increasing Ultron’s personal damage while strengthening the army operating beneath his command.

 Alternatives:

Medallions:

: BiS for Ultron. Available via the Unique Challenge Scenario (Trainyard) in the Danger Room.

: Good until ou are able to get a Sentinel Scenario Medallion

: A decent medallion if just starting out to gear.

Legendaries:

 : Clear choice for for summoners once level 60.

: Use while trying to get a level 80 legendary.

Rings & Insiginas:

Use Sling Ring of the Kamar-Taj (energy) until you are able to get a cosmic ring with +3 Energy and +3 Durability

Ideally a insigina of Insignia of Nick Fury would be ideal with some sort of combination of Brutal Strike/ Critical Hit/ Brutal Damage/ Critcal Damage.

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ROTATION

Alright youre going to start off with  into nothing to already prepare youre  .

Afterwards you will do the following initial sequence and then spam your powers as they come off of repeat. Remember to always cast  off cooldown to keep the buff of .

 

 ->  ->  ->  -> . Filling in with  as your filler and   for buff upkeep.

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CONCLUSION 

And with that, the build is complete.

I hope you enjoy commanding Ultron as he was intended: not as a solitary machine, but as an ever-expanding intelligence whose will is carried through an army of mechanical bodies.

It may not be the most conventional path, nor the highest theoretical damage configuration, but it is powerful, reliable, thematic, and capable of clearing every challenge placed before it.

Thank you for reading the full guide!