Who is Ben’s 11th alien?
After unlocking his 11th alien, Gax, Ben encounters Vilgax. Ben beat Vilgax that one time because it was an alien he had lots of practice with. Malgax punched him to the moon and he survived but Ben forcefully transformed back because of all the damage. Basically he’s not overpowered because he struggles with simple of villains like slam worm but he is powerful.
Is Ben 10 100% human?
As for the Alien Force episode, Ben being detected as an alien likely stems from prolonged exposure to alien DNA via the Omnitrix, making his biology partially alien. So, while he’s human, his connection to aliens runs deeper than most. Grey Matter is the first alien to stay in a whole episode due to an Omnitrix malfunction; the second being Rath. Grey Matter is Ben’s smartest alien. Grey Matter’s DNA was the first DNA sample added to the Omnitrix.