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POTO Sandbox.png
General Information
Species Emaejyn
Home World Kryaht
Body Humanoid
Powers and Abilities
Abilities Imagination Manipulation
Voice Actor Fred Tatasciore

Sandbox is the Infinimatrix's DNA sample of an Emaejyn from the planet Kryaht in Ben 10: Protector of the Omniverse.


Sandbox is a nine-foot tall boxy humanoid with light brown skin. He has an elongated body, long arms with large hands and short legs. He has green eyes. The Infinimatrix symbol is on his chest.

Transformation Sequence

Ben slams down the Infinimatrix's dial and is engulfed in a green light.

As the transformation track begins playing, Ben hovers in a dark green background with light green bubbles pulsating rapidly behind him.

Powers and Abilities

Sandbox has the ability to enter his own imagination, where he can do anything and make anything happen.


Sandbox will be forced out of his imagination when the Infinimatrix times out.

Sandbox can be considered somewhat addictive as his ability to enter and manipulate his imagination gives Ben a form of wish fulfillment. It is therefore possible for Ben to lose touch with reality if he becomes too attached to Sandbox.

Sandbox is useless in battle as nothing he creates in his imagination can affect the real world.

Species and Planet Information

Emaejyns are escapists and prefer to play around in their imaginations rather than deal with real life. Many of them become addicted to living in their imaginations and end up dying as they forget to take care of their basic needs in the real world.




Sandbox is named after the sandbox game genre, where players have a large amount of freedom to let their creativity flourish. His name also fits his boxy appearance.

Sandbox's species name, Emaejyn, sounds like the word 'imagine'.


  • Credit to JayTVStudiosYT for the infobox image.
  • Sandbox's appearance is based on one of Bloxx's concept designs, with the head and legs of another one.
  • Sandbox speaks in a deep voice, somewhat similar to Cannonbolt's in the original series, but without the filter.
  • Anything Sandbox creates or destroys in his imagination fades into and out of existence like sand.
  • This version of Sandbox was created before Tom Perkins posted his retroactively-made design for the canon version.
Ben 10: Protector of the Omniverse
Ben Tennyson - Gwen Tennyson - Kevin Levin
Azmuth - Bellicus - Carl Tennyson - Cash Murray - Charlie Grant - Crystal Phoenix - Emily - Frank Tennyson - Galvan Soldiers - Gluto - Jimmy Jones - Jonesy - J.T. - Julie Yamamoto - Kenneth Tennyson - Max Tennyson - Myaxx - Mr. Baumann - Natalie Tennyson - Pakmar - Plumbers (Bromeba - Chortle - Elliot - Fistina - Jerry - Leadfoot - Magister Patelliday - Magister Prior Gilhil - Maryana Autumn - Morty - Plumbers' Helpers (Alan Albright - Cooper Daniels - Helen Wheels - Manny Armstrong - Pierce Wheels)) - Professor Paradox - Sandra Tennyson - Serena - Ship - Tetrax Shard - Zed
Regular Aliens
Alien X - Antigravitesla - Arctiguana - Astrodactyl - Atomix - Ball Weevil - Big Chill - Bob the Blob - Brainstorm - Bullfrag - Buzzshock - Cannonbolt - Chamalien - Chromastone - Clockwork - Crashhopper - Decagon Vreedle - Diamondhead - Ditto - Domino - Eatle - Echo Echo - Evomania - Eye Guy - Fasttrack - Four Arms - Frankenstrike - Ghostfreak - Glitch - Goop - Gravattack - Grey Matter - Gutrot - Heatblast - Heavysplitter - Humungousaur - Jetray - Juryrigg - Kickin Hawk - Lodestar - Mimisthetic - MindFlip - Mole-Stache - Octolord - Pesky Dust - Plantapocalypse - Porquillpine - Porturtle - Purebred - Rath - Ripjaws - Rock Bottom - Sandbox - Shocksquatch - Slow Hands - Snare-oh - Sparkhenge - Spidermonkey - Spitter - Squidstrictor - Stinkfly - Swampfire - Thriller Whale - Timbrewolf - Toepick - Upchuck - Upgrade - Venomsnake - Vine-al Warning - Way Big - Wildmutt - Wildvine - Wolf Calendar DS - XLR8
Ultimate Forms
Ultimate Arctiguana - Ultimate Big Chill - Ultimate Cannonbolt - Ultimate Echo Echo - Ultimate Goop - Ultimate Gravattack - Ultimate Humungousaur - Ultimate Rath - Ultimate Spidermonkey - Ultimate Swampfire - Ultimate Way Big - Ultimate Wildmutt
Season 1

Season 2

Season 3

Season 4

Season 5

Season 0
Azmuth's Invention - Wrath of the Xenocytes - The Trouble With Doubles - Escape From the Infinimatrix - Bait - Fusing Some Enemy Butt - Factorial Doom - Wrath of Vilgax - A Trip To...Nowhere - To The Past - Clown Catastrophe - Forever Stealing - Rumors and Lies - Summer Again - Truce - Ultimate Escape - Hero's Challenge - Controlled - Ben-Blank: Protectors of the Omnigizer - Prom Not To Be - Doom Date - Behind the Mask - Quest to Conquer - When Things Are Altered - Play It Back Again - Ben 10: Fall of the Omniverse - Surprise Visit - The Chronian Invasion - Aggression

Related Pages
Anur System - Earth-50

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