Ultron (English Wikipedia)

"Ultron Voices (Marvel Universe)". Behind The Voice Actors. Retrieved October 14, 2018. Check mark indicates role has been confirmed using screenshots of closing credits and other reliable sources.{{cite web}}: CS1 maint: postscript (link)

biffbampop.com (Global: low place; English: low place)

Walker, Glenn (April 13, 2015). "Avengers Assemble S02 E14: Crack in the System". Biff! Bam! Pop!. Retrieved September 24, 2024.

capcom-unity.com (Global: low place; English: low place)

"Additional characters, first story mode trailer, pre-order details and release date for Marvel vs. Capcom: Infinite". Capcom-Unity.

cbr.com (Global: 246^th place; English: 180^th place)

Harth, David (July 20, 2022). "10 Scariest Avengers Villains". CBR. Retrieved February 6, 2023.
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"The Wacker Factor - Marvel Animation and "Ultimate Spider-Man: Web Warriors"". CBR. Aug 22, 2014.

comicbookresources.com (Global: 991^st place; English: 656^th place)

Phegley, Kiel (November 19, 2012). "Brian Bendis Prepares Age of Ultron For 2013". Comic Book Resources. Comic Book Resources. Archived from the original on January 6, 2013. Retrieved January 21, 2013.
"SDCC EXCL.: First Look at "Disney Infinity 3.0 Hulkbuster, Details on Ultron's Abilities". ComicBookResources.com. July 8, 2015. Archived from the original on August 29, 2015. Retrieved August 21, 2015.

deadline.com (Global: 10^th place; English: 9^th place)

Petski, Denise (July 21, 2025). "John Stamos To Voice Howard Stark In Marvel's Iron Man And His Awesome Friends; Guest Cast & Trailer Unveiled". Deadline Hollywood. Retrieved July 21, 2025.

denofgeek.com (Global: 410^th place; English: 262^nd place)

Howard, Kirsten (September 29, 2021). "What If...? Episode 8 Review: A Very Ultron Apocalypse". Den of Geek. Retrieved February 10, 2024.

empireonline.com (Global: 221^st place; English: 163^rd place)

Hewitt, Chris (February 20, 2015). "Joss Whedon Talks Avengers: Age Of Ultron". Empire. Archived from the original on February 20, 2015. Retrieved February 20, 2015.

ew.com (Global: 35^th place; English: 31^st place)

popwatch.ew.com

Breznican, Anthony (July 16, 2014). "This week's cover: Meet the new boss in Marvel's 'Avengers: Age of Ultron'". Entertainment Weekly. Archived from the original on July 16, 2014. Retrieved July 16, 2014.

facebook.com (Global: 77^th place; English: 111^th place)

"Marvel". www.facebook.com. Archived from the original on 2022-02-26.

gamesradar.com (Global: 376^th place; English: 257^th place)

Marston, George (August 4, 2022). "Best Marvel supervillains". gamesradar. Retrieved February 6, 2023.

ghostarchive.org (Global: 32^nd place; English: 21^st place)

"Marvel". www.facebook.com. Archived from the original on 2022-02-26.

gizmodo.com (Global: 474^th place; English: 329^th place)

Pulliam-Moore, Charles (October 6, 2021). "Marvel's What If Season 1 Finale Found a Time and Place for Everyone". Gizmodo. Retrieved February 10, 2024.

hollywoodreporter.com (Global: 15^th place; English: 16^th place)

Couch, Borys Kit,Aaron (2024-08-23). "James Spader Returning as Ultron for Marvel's Vision Series". The Hollywood Reporter. Retrieved 2025-09-09.{{cite web}}: CS1 maint: multiple names: authors list (link)
Couch, Aaron (May 1, 2015). "Marvel Legend Reveals What Stan Lee Initially "Hated" About 'Age of Ultron' Breakout". The Hollywood Reporter.

ign.com (Global: 53^rd place; English: 44^th place)

"Top 100 Comic Book Villains". IGN.
Schedeen, Jesse; Yehl, Joshua (March 27, 2019). "The Top 25 Marvel Villains". IGN. Retrieved February 6, 2023.
"Rise of Ultron - LEGO Marvel's Avengers Guide". 20 January 2016.

marvel.com (Global: 620^th place; English: 506^th place)

"Marvel News, Blog, Articles & Press Releases | Marvel". Marvel Entertainment. Retrieved 2021-05-23.

marvelheroes.com (Global: low place; English: low place)

"The Age of Ultron Arrives". MarvelHeroes.com. Gazillion Entertainment. June 29, 2016. Retrieved November 27, 2016.

mtv.com (Global: 80^th place; English: 67^th place)

Ditzian, Eric (July 21, 2013). "Joss Whedon Spills First 'Avengers: Age Of Ultron' Details". MTV. Archived from the original on July 23, 2013. Retrieved July 22, 2013.

screenrant.com (Global: 98^th place; English: 75^th place)

Dyce, Andrew (July 25, 2015). "20 Most Powerful Marvel Villains". ScreenRant. Retrieved February 6, 2023.
Erdmann, Kevin (May 6, 2022). "Doctor Strange In The Multiverse Of Madness Easter Eggs & MCU References". Screen Rant. Archived from the original on May 6, 2022. Retrieved May 8, 2022.

sportskeeda.com (Global: 781^st place; English: 509^th place)

Sarkar, Supratim (2025-04-03). "Ultron is officially coming to Marvel Rivals, and the Mechanical Menace looks scary". www.sportskeeda.com. Retrieved 2025-04-03.

superherohype.com (Global: 1,882^nd place; English: 1,375^th place)

"Comics: Marvel Teases the 'Age of Ultron'". SuperHeroHype. Nov 16, 2012.

themarysue.com (Global: 2,817^th place; English: 1,642^nd place)

Ulatowski, Rachel (July 26, 2022). "Strongest Marvel Villains, Ranked". The Mary Sue. Retrieved February 6, 2023.

thewrap.com (Global: 112^th place; English: 88^th place)

Seitz, Loree (May 6, 2025). "Tony Hale, Vanessa Bayer and Talon Warburton Board Disney Jr.'s 'Marvel's Iron Man and His Awesome Friends' | Exclusive". TheWrap. Retrieved May 6, 2025.

twitter.com (Global: 23^rd place; English: 32^nd place)

"Wage war against Ultron in a new event inspired by the upcoming film. Avengers vs Ultron starts today! #AgeofUltron". Twitter. Retrieved 2021-05-23.
""It was not my intent to snuff the life from this world. That was merely an unfortunate accident." #MARVELFutureRevolution". Marvel Future Revolution. Twitter. May 18, 2021.

web.archive.org (Global: 1^st place; English: 1^st place)

"THE 200 GREATEST COMIC BOOK CHARACTERS OF ALL TIME". www.wizarduniverse.com. Archived from the original on March 15, 2009. Retrieved May 23, 2021.
Phegley, Kiel (November 19, 2012). "Brian Bendis Prepares Age of Ultron For 2013". Comic Book Resources. Comic Book Resources. Archived from the original on January 6, 2013. Retrieved January 21, 2013.
Breznican, Anthony (July 16, 2014). "This week's cover: Meet the new boss in Marvel's 'Avengers: Age of Ultron'". Entertainment Weekly. Archived from the original on July 16, 2014. Retrieved July 16, 2014.
Hewitt, Chris (February 20, 2015). "Joss Whedon Talks Avengers: Age Of Ultron". Empire. Archived from the original on February 20, 2015. Retrieved February 20, 2015.
Ditzian, Eric (July 21, 2013). "Joss Whedon Spills First 'Avengers: Age Of Ultron' Details". MTV. Archived from the original on July 23, 2013. Retrieved July 22, 2013.
Erdmann, Kevin (May 6, 2022). "Doctor Strange In The Multiverse Of Madness Easter Eggs & MCU References". Screen Rant. Archived from the original on May 6, 2022. Retrieved May 8, 2022.
"SDCC EXCL.: First Look at "Disney Infinity 3.0 Hulkbuster, Details on Ultron's Abilities". ComicBookResources.com. July 8, 2015. Archived from the original on August 29, 2015. Retrieved August 21, 2015.

wizarduniverse.com (Global: 9,897^th place; English: 6,773^rd place)

"THE 200 GREATEST COMIC BOOK CHARACTERS OF ALL TIME". www.wizarduniverse.com. Archived from the original on March 15, 2009. Retrieved May 23, 2021.

worldcat.org (Global: 5^th place; English: 5^th place)

search.worldcat.org

Marvel encyclopedia. Chris Claremont, Stan Lee, Tom DeFalco, Peter Sanderson, Tom Brevoort, Michael Teitelbaum (New; American ed.). New York. 2019. ISBN 978-1-4654-7890-0. OCLC 1047618717.{{cite book}}: CS1 maint: location missing publisher (link) CS1 maint: others (link)

Ultron (English Wikipedia)

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animationmagazine.net (Global: 738^th place; English: 473^rd place)

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