Who Were the Original Aliens in Ben 10?

All of Ben Tennyson's original alien transformations were cool, but some were much more useful than others, like Heatblast and Upgrade.
All of Ben Tennyson's original alien transformations were cool, but some were much more useful than others, like Stinkfly and Wildmutt.
Ben Tennyson finds an alien device that allows him to transform into ten beings in Ben 10.

Omnicoid Void: Spitter

Which alien from the original series is your least favorite? : r/Ben10

My First 10 Ben 10 Aliens by EnderKnight1 on DeviantArt

Who Were The Original Aliens On Ben 10?, aliens ben 10 classico

BOO-GLEECH

Who Were the Original Aliens in Ben 10?

Ben 10: Alien Force (TV Series 2008–2010) - IMDb

What if naurto in the beginning of the series, had the Omnitrix and access to all the aliens in the original ben 10 series, not just the original ten like waybig, as

What if?] Ben 10 Alien Force aliens in Ben 10 Reboot!

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Ghostfreak

Ben 10 Aliens

original ben 10 aliens, Ben 10, the original 10 aliens by ~Cyborgchimp on deviantART