Size Man
Size Man.png
General Information
Species Py'em Partilo
Home World Enormicro
DNA source Unknown
Body Humanoid
Alternate Counterparts TinyBig (Rebel Brandon)
Powers and Abilities
Abilities Size-Alteration
Super Intelligence (Small)
Super Strength (Big)
Enhanced Durability (Big)
Equipment Helmet
First Appearance Showdown in Little Tokyo

Size Man is an alien transformation in the series, Brandon 10.


Size Man takes on a humanoid appearance. His skin appears like grey armor with several black lines and red patches/lines on it including on his shoulder plates and mid-section. His head resembles a helmet which has two ear supporters, similar to headphones, with two green lines on each side and a mouth piece that sticks outwards slightly. His helmet also splits into two revealing a black patch as the rest of the helmet sticks upwards. His eyes are big, green and very roundish. His neck is a dark grey and his collar is black which continues downwards on his chest which then splits into two parts which leads towards his back. On his mid-section, he has abs and a roundish triangular end which leads onto his legs. In between his mid-section and his legs is a light grey patch. His legs are grey and his boots have a black lining around them. His arms have a red finger-less glove-like feature which reveals his skinny, grey fingers. On his chest is the Ultimatrix symbol.

Transformation Sequence

Brandon spins around in DNA and curls up due to the changes. His ribs enlarge and the armor plating form around his arms and chest. His head forms a helmet like structure. Within a flash, Size Man appears.

Main article: Transformation Sequences

Powers and Abilities

Size Man, if not obvious from his name, has the ability to change his size without any limit. While his Size-Changing Aliens does not need to be exact, he usually sets it into three different types of sizes: Tiny, Average and Gigantic. Size Man also has a ying yang type of addition to his abilities. The smaller Size Man becomes, the smarter he gets which grants him the ability to hack systems and analyse situations quicker. When in a larger size, Size Man is granted with super strength and enhanced durability.


While becoming smaller makes Size Man smarter, becoming larger will limit his ability to think making him not very intelligent however he does not become stupid but he doesn't rely on wits as much. When Size Man is in his smaller sizes, he is more exposed to larger threats and he can not block attacks like he can in his larger sizes.


In Showdown in Little Tokyo, Brandon unlocks Size Man and uses him to defeat TEKBOTSs.

In The Hungry Alien, Size Man fought with the Vorzzle.

In The Three Brandons, Rebel Brandon uses his version of Size Man to stop the Interceptor from crash landing.

In Long Shot, Brandon uses Size Man to fight Reptor.

In A Hero's Future, Brandon uses Size Man to take out two thugs.

In Dreamed a Dream, Size Man fights a giant robot in a dream.

In The Architect, Size Man manages to sneak on board Brovin's ship as he leaves the Earth's atmosphere.


Ultimate Hero

Video Games

Online Games



  • Size Man had an alternate design in which he resembled a reptile. This was an attempt to make an alien that took an appearance similar to Godzilla and many other giant monsters but the design didn't seem to fit.
  • Size Man had two other names during his sketch design process: Magnidude and Scalar.
    • Magnidude was going to initially be his name to avoid having too many aliens with "Man" in their name but The Writer was worried that the term would be mistaken with Magnets rather than Size.
      • The name, however, was given, after slight tweaking, to the villain of his debuting episode, Mister Magnitude.
  • Size Man's design was based off of Ultraman and Ant Man.
    • The concept may go even further with the abilities of the various sizes being similar to the personalities of the characters. A fighter like Ultraman in gigantic sizes and a thinker like Ant Man in smaller sizes. It is possible that there will be more references or inspired concepts in the future.


Brandon 10: Ultimate Hero
Main Characters in Brandon 10: Ultimate Hero
Brandon | Coco | Sarah
Supporting Characters in Ultimate Hero
James | General Gates | Jenny | Lucy
Main Villains in Ultimate Hero
Khan | Extreme Bikers | The Conqueror
Aliens in Ultimate Hero
Hydro-Man | Drillbit | Heal X | Shock Speed | Shredder | Flex | Size Man | Telecraft | Leap Frog | Magnesium
Ultimate Aliens in Ultimate Hero
Ultimate Loch Ness | Ultimate Crusher | Ultimate Astro | Ultimate Agilmur | Ultimate Snow Bear
Additional Aliens in Ultimate Hero
Portal | Shadow | Nova | Bio-Shock
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