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 Movies and Shows in Order

Original Playlist, Ben 10 Fan Fiction Wiki

Ben 10: Omnitrix Aliens (Alien Force) / Characters - TV Tropes

Eldritch Grandma — I was looking up Ben 10 aliens for nostalgia, and

How you'd feel if the original alien roster had been used in Alien Force first? : r/Ben10

Ben 10 Aliens by Wazzaldorp on Newgrounds

X 上的 S.D.ARTS.10：「Ben 10 Tempest (Original Alien) #fanart #art #digitalart #digitaldrawing #ben10 #ben10fanart #ben10omniverse #Commission / X

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

Cannonbolt, Ben 10 Aliens Wiki

Ben 10 (2005 TV series) - Wikipedia