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Bellwood is a city in the United States of America, and is the main setting for Alien Force, Ultimate Alien, and Omniverse. It is the hometown of the Tennyson Family and various members of the Plumbers.


Prime Timeline[]

Bellwood's population is approximately 20,000.[DM 1]

Race Against Time Timeline[]

Bellwood's population is 26,000 and counting.[1]


Not much has been revealed about the climate of Bellwood, though it most likely has a coast-side climate, as it has always been warm enough outside for characters to not need to overdress.

In Bellwood, winters appear to lack snow.[2]

Education System[]


Madison Elementary School is one of Bellwood's elementary schools[3][merch 1] and there are only two known high schools.[4][5] It is unknown how many middle schools and colleges there are. It also also unknown if they are more elementary schools besides Madison.


Bellwood was founded in 1638 by a group of Sámi people. Its English name is derived from the bell that was built to commemorate its founding. Hand-carved from walnut timber and weighing over 3,000 lbs., it is the world's largest wooden sleigh bell.[6]

Malefactor (34)

The Bell behind Bellwood

At some point between the events of Ben 10: Destroy All Aliens and The Ultimate Enemy: Part 2 (based on conflicting statements),[note 1] various alien species came to Earth and formed a secret town underneath the city called Undertown.

Undertown's existence was revealed to the citizens of Bellwood in The Frogs of War: Part 1, as Undertown's citizens were evacuating in search of a new home. In The Frogs of War: Part 2, the residents of Undertown return to fight off the Incurseans and work with the humans side-by-side, stating that they'll work on coexisting together in Bellwood.

End of Time[]

At the end of the Prime Timeline, the ruins of Bellwood's buildings and skyscrapers sit on crumbling, floating islands. On one particular island sits the ruins of a Mr. Smoothy location, which Eon occasionally uses as a lair.

Locations and Landmarks[]

Public Spaces[]





Known Inhabitants[]

Prime Timeline[]

Race Against Time Timeline[]

No Watch Timeline[]

Dimension 23[]

Mad Ben's Dimension[]



Ben 10[]

Season 1[]

Season 4[]


Alien Force[]

Ultimate Alien[]




  1. When asked about Undertown's origins, the crew had differing views:


Crew Statements[]

Dwayne McDuffie[]

Steven T. Seagle[]

Derrick J. Wyatt[]

Matt Wayne[]


  1. 1.0 1.1 X-Ray Ben and Diamondhead V.2 DVD; file
Earth Locations
Prime Timeline
United States of America
Bellwood Bellwood MuseumBen's HouseBillions TowerBurger ShackBaumann's StoreCollins' ManorGwen's HouseJulie's HouseKevin's Mother's HouseMadison Elementary SchoolMax's PlumbingMr. SmoothyNemesis TowerPlumber HeadquartersSara's Italian DeliSav Cost
Undertown Argistix Security Inc.Black HoleGas HouseGolden Fist TournamentSpaceman's WharfY-it's Scooter Rentals
Northwest Wyoming (Yellowstone National Park) • Seattle (Space Needle)
Northeast South Dakota (Mt. RushmoreRapid City)
Southwest California (San FranciscoYosemite National Park) • Nevada (Area 51) • New Mexico (Slaterville)
Southeast Florida (Kennedy Space Center) • Kentucky (Fort Knox) • South Carolina (Digby Dairy)Washington DC (Mega Mart)
East Coast New York City (Total Zone)Niagara Falls • St. Augustine (Fountain of Youth)
Other Air Force BaseBancroft AcademyCamp OpiniconFriedkin UniversityGrover's MillHex and Charmcaster's TowerLos SoledadPlanetary StudiosSanta Mira (Hatchery)SealSparksvilleThunderclap DinerWaltonValadis Laboratories
Other Countries
Brazil (Rio de Janeiro) • China (Great Wall of China) • Egypt (Pyramids of Giza)Greenland • Mexico (Mayan Temple of Ek Chuaj) • Russia (Moscow) • South America (Dos SantosTemple of the Sky) • United Kingdom (Big BenHighgate CemeteryHowl's Castle Moving and StorageLondonStonehenge)Zarkovia
23rd Mr. SmoothyDagon's ShrineExtraterrestrial EmporiumHP Lunchkraft
Alternate Dimensions/Timelines
Original Future Timeline Omnitrix City (Ben 10,000's Headquarters)
Race Against Time Timeline Hardware Store HeadquartersLe'Roys
Ultimate Alien Future Timeline Ben 10,000's Headquarters
Dimension 23 Mr. GyroTower 23
Omniverse Future Timeline Omnitrix City (Ben 10,000 Tower)
Games Italy (CatacombsColosseum) • France (Paris) • Japan (Tokyo) • South America (Amazon) • United States of America (Grand CanyonDevils Tower)
Non-Ben 10
Generator Rex Bob's Biscuit BarnBug Jar