Marvel's Avengers Assemble Wiki
Doctor Spectrum
Biographical information
Real name

Billy Roberts


Doctor Spectrum

Physical description


Hair color


Eye color

Black (as White)

Personal information



Reality Stone
Power Prism

Chronological and political information

Former Supervillain
S.H.I.E.L.D (currently)


Member of the Squadron Supreme
Member of the Agent of S.H.I.E.L.D.


Squadron Supreme (formerly)

First appearance

Hyperion (episode)

Voiced by

Phil LaMarr

Doctor Spectrum is a member of the Squadron Supreme and one of the secondary antagonists (alongside Hyperion, Power Princess, and Speed Demon) of Season 2.



Doctor Spectrum was an alien superhero from a distant world where he was a member of a team of heroes similar to the Avengers called the Squadron Supreme. The people of their world feared their power and turned against them. As a final solution, the Squadron Supreme forced Spectrum to destroy their home planet along with his team on it, escaping into space in his Citadel.[1]


After Nighthawks battle with the Avengers, the Squadron Supreme is revealed to be alive and well. They make plans to defeat the Avengers and conquer Earth.

The Dark Avengers[]

Using the Reality Gem, Doctor Spectrum alters reality so the Avengers are all criminals with darker costumes, and the Avengers Tower is the headquarters of the Squadron. Due to a spike in energy, Iron Man sees the real reality and manages to convince his team to come together. However, Spectrum has created a machine that will give him complete control over reality and plans to alter history so the Avengers are never born. Captain America is able to get a hold of the stone and revert reality back to normal. The Squadron leaves with Nighthawk activating charges placed at the base of the Avengers tower. The Avengers manage to prevent the structure from falling onto New York in time for J.A.R.V.I.S. to activate the repair systems.


Ant-Man begins to atone by stopping the villains he sold weapons to in order to fund his research. Among them were Dr. Spectrum, who got close enough to disclose his real name, even though he hate's being called Billy. The device Ant-Man created was a power-amplifying gauntlet, capable of increasing his strength. However, as the Avengers discovered, Bill wasn't looking for power, but control. The Power Prism is revealed to be a sentient life form who took control over Bill's body, even being the one who destroyed The Squadron's world as he was forced by The Squadron Supreme to destroy a planet, a feat Bill was completely against. After the Avengers freed him, Bill joined SHIELD as a deep space scientist, while the Prism created a construct of Dr. Spectrum.

Midgard Crisis[]

Thor is convinced that Power Princess wants to defect from Squadron Supreme, but Hulk knows better and must protect Thor from Power Princess's duplicitous ways.

Avengers' Second To Last Stand[]

The Avengers are challenged by the fully formed and incredibly powerful Squadron Supreme for a battle that will end with only one team as the victor.

Avengers Underground[]

Using the Power Amplifier, Captain America absorbed Dr. Spectrum, allowing him to temporarily change the sun from yellow to blue. This change drained the Prism of all it's powers and allowed Black Widow to effortlessly defeat Hyperion.


He is smart about understanding deep space materials as revealed in The Dark Avengers, such as how to control the Reality Stone and that it came with no instructions, presumably offscreen. He created a machine to manipulate the reality stone, and he mentioned to Nighthawk that there was a limit to manipulating the Reality Stone to keep the Squadron Supreme in charge of Earth. In Spectrums, he is also very calm, fairly assertive, and cocky. Until being zapped by Thor when Spectrum woke up, he was frustrated, making the rest of the Avengers regret finding him. If he is physically attacked, he uses his attacker's weakness to show that he takes his warnings to others seriously and is emotionally disturbed. He started with using the power prism on Thor as an example of making him understand that the Avengers disturbed Dr. Spectrum and making it harder to leave him alone. He then used the Power Prism to learn about what disturbs Thor emotionally with a Dark Loki calling out Thor about his previous failures of not protecting Loki; coincidentally, Loki is an antagonist to Thor, in which he mentioned the fact that he lied about loving Loki. Spectrum picked Captain America next for the power prism with the use of making a Dark Winter Solider fight Captain America. Dr. Spectrum used the power prism on the arc reactor of Iron Man to manifest a Dark Ultron as a mid-antagonist of The Ultron Outbreak, Avengers Disassembled, A Crack In The System, and Thanos Triumphant. He showed confidence in the fact that his full power on the power prism has returned to make a reminder of the fact that he held the Squadron Supreme for forcing him to destroy a planet as revealed in Hyperion. With Ant-Man making a cautionary tale to stop using the prism before he replicates a similar issue with the Squadron Supreme destroying a planet, he looked at Scott Lang and said that he was happy having full power of the prism, which was a danger to Dr. Spectrum's health. With Captain America admitting to the fact that he refuses to fight Winter Solider anymore, the illusion of Winter Solider disintegrated, which made Dr. Spectrum afraid of the fact that he was losing the power of the stone. Thor defeated his dark Loki counter part by admitting to regret that he let Loki down and acknowledges that he still hopes for Loki to change. Iron Man admits to the fact that Falcon, Captain America, and Black Widow left out of frustration at Tony for not being properly prepared, and Iron Man promises to fix the issue next time it happens again. Dr. Spectrum reveals the fact that he still clung to the fact that the Avengers can't stop him; if he can't find peace, then no one can. Falcon reveals the fact that Spectrum was a victim to the wishes of the Squadron Supreme to destroy their planet, tying the fact that it was according to his point of view that he was right. Spectrum revealed the fact to the Avengers on why he can't get rid of the power prism being a part of him. Ant-Man was able to understand the fact that that is the reason why he wanted the power amplifier, with Iron Man saying that it was not to increase the power of the prism but to increase the control of the power prism. Also feeling the fear that it is too late, in which Thor states that it is never too late to correct his mistakes, and with Captain America revealing for him to let go of his fears implicating that Spectrum is strong enough to get rid of the power prism by redirecting the power prism. Falcon and Ant-Man were able to save Dr. Spectrum from a violent death from gravity, and he asked them both to call him Bill. Iron Man commends the fact that working for S.H.I.E.L.D. would help them expand their interstellar explorations, and Captain America tells a reformed Dr. Spectrum that it will help Bill start a new life on a different planet. Bill expresses his gratitude to The Avengers for helping him accept the fact that, facing his fears of being a prisoner to the power prism forever, Ant-Man said to a reformed Dr. Spectrum that he saved himself and reminded him of his identity with Dr. Spectrum that even though he was acting on the command of Squadron Supreme, the Avengers believed in him.

Powers and Abilities[]


  • Empathic Fear Absorption and Empowerment: Dr. Spectrum can fully or partially absorb emotions.
  • Spectrum Energy Manipulation: Dr. Spectrum can create, shape, and manipulate the entire electromagnetic spectrum, the range of all possible frequencies of electromagnetic radiation.
  • Flight: He is also able to fly at high speeds.
  • Intangibility: Dr. Spectrum can move through solid objects and ignore most physical effects in its path.
  • Blast Power: Dr. Spectrum can release energy over a specific target area, causing great damage.
  • Divine Powers: Dr. Spectrum has godlike powers, granting them an immense amount of sheer power.
  • Energy-Based Constructs: Dr. Spectrum can transform energy into different forms and objects with varying detail and permanence, ranging from simple shapes and images to individual elements, substances, and materials, to functional items such as tools and weapons, to more complex creations such as living and non-living beings. alive.
  • Energy Projection and Manipulation: Dr. Spectrum can emit and project energy in a variety of shapes and forms, such as waves, blasts, auras, etc.
  • Energy Shield: Dr. Spectrum can create shields of various shapes and sizes with various forms of energy.
  • Energy-Enhanced Strike: Dr. Spectrum can use energy to power a strike (punch, kick, headbutt, etc.). They channel their energy into body parts.
  • Force Field: Dr. Spectrum can create, shape, and manipulate force fields, a massless energy field capable of simulating matter and acting as a barrier or wall.
  • Spectrum Energy Enhanced Attacks: Dr. Spectrum can manipulate ranges or spectrums of things, manipulating what is in the ranges as well as the order in which the ranges are.


  • Marksmanship: Dr. Spectrum can achieve complete and absolute accuracy on distant targets.
  • Unarmed Combat: Dr. Spectrum possesses superhuman abilities and capabilities in unarmed combat.



  • Power Prism: Dr. Spectrum often wields the Power Prism, which allows him to control multicolored light-based energies through willpower. Energies can be used for explosions, shields, or solidification to create forms such as containers. He can also use these energies for flight and intangibility.


Episode Appearances[]

Season 1[]

Season 2[]


Background Information[]

  • Doctor Spectrum was created as an evil version and imitation of DC Comic's Green Lantern. In the comics, Dr. Spectrum comes from Earth-712, was not an alien but was a human, and was a member of a superhero team called The Squadron Supreme.
  • As in Avengers Assemble, he was the only member of Squadron Supreme who was good, while the rest of the team members of Squadron Supreme were evil. In the comics, he was a good hero, unlike their alternate universe counterparts, the Squadron Sinister, on whom this group is more based.
  • The same voice actor who voices Dr. Spectrum also plays as Dr. Walter Cage in The Parent Trap of Ultimate Spiderman.
    • They were victim of circumstances
    • Are scientists
    • Work for S.H.I.E.L.D
    • Scorpio and The Squadron Supreme both are held responsible for the destruction of lives
    • Walter Cage and Dr. Spectrum (Billy Roberts) survived a tragedy until realizing the truth on why they were victim of circumstances.
    • They were deceived
    • and are voiced by Phil Lamarr
  • Doctor Spectrum's voice actor Phil Lamarr had previously voiced Doctor Spectrum's inspiration, Green Lantern, in Justice League and Justice League Unlimited.
  • It’s clear that the Avengers Assemble version of Dr. Spectrum is based on John Stewart, who is the Green Lantern of the Justice League and Justice League Unlimited.


  1. "Hyperion". Man of Action & Jacob Semahn (writers) & Jeff Allen (director. Marvel's Avengers Assemble. Disney XD. August 4, 2013. No. 7, season one.