A category for all aliens that have appeared in every Ben 10 series.
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All items (189)
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D
F
H
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S
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- Shocksquatch
- Slamworm
- Snare-oh
- Snare-oh (Ben 10,000)
- Spidermonkey
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- Spitter
- Spitter (Kenny)
- Stink Arms
- Stinkfly
- Stinkfly (Ben 10,000)
- Stinkfly (Kevin)
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- Swampfire
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U
- Ultimate Albedo
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- Ultimate Arctiguana
- Ultimate Ben
- Ultimate Big Chill
- Ultimate Cannonbolt
- Ultimate Echo Echo
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- Ultimate Gravattack
- Ultimate Humungousaur
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- Ultimate Rath
- Ultimate Spidermonkey
- Ultimate Swampfire
- Ultimate Way Big
- Ultimate Wildmutt
- Upchuck
- Upgrade
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- UpRigg
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Y
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- Young Diamondhead
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- Young Eye Guy
- Young Feedback
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- Young Grey Matter
- Young Heatblast
- Young Ripjaws
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- Young Stinkfly
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- Young Upgrade
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- Young Wildmutt
- Young Wildvine
- Young XLR8
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