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.

Ben 10: Ultimate Alien (A Review) – Toonopolis, The Blog

Ben 10 Original Series All Aliens!(2006)

Here's all my Ben 10 classic looking reboot aliens compared to the original aliens : r/Ben10

Ben 10 (Original) redesign part 2 by Fiqllency on DeviantArt

Ben 10 Aliens

Ben 10 Aliens by kjmarch, Ben 10

Create a Ben 10 Aliens (original ben 10 aliens) Tier List - TierMaker

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

Ben 10 Original Series Aliens Short Analysis