this is a list of when Ben 1st Used, Obtained, or Unlocked the alien in their series (NOTE: the episodes with links are real episodes & specials from Ben 10 or other series episodes with no links are fan made) Ben 10 Classic : Heatblast|Pyronite - First used in And Then There Were 10 Wildmutt|Vulpimancer - First used in And Then There Were 10 Diamondhead|Petrosapien - First used in And Then There Were 10 XLR8|Kineceleran - First used in And Then There Were 10 Grey Matter|Galvan - First used in Washington B.C. Four Arms|Tetramand - First used in Washington B.C. Stinkfly|Lepidopterran - First used in Washington B.C. Ripjaws|Piscciss Volann - First used in The Krakken Upgrade|Galvanic Mechamorph - First used in Permanent Retirement Ghostfreak|Ectonurite - First used in Permanent Retirement Cannonbolt|Arburian Pelarota - Accidentally unlocked by Gwen in The Big Tick Wildvine|Florauna - Accidentally unlocked by Ben in Camp Fear Spitter|Sphoeroid - Unlocked off-screen after Ben 10: