The animation I think is more detailed this time around. The character designs are eye-popping and pretty unique. The music is also an improvement, it is funkier and more memorable, the theme song in Ben 10 was good but it is the sort of theme song you love or hate, this one was more to my taste. The writing is strong, the story lines are more complex and surprisingly clever and I agree that the characters are much more mature here, especially Ben who is more likable than he was in Ben 10. The villains are also more interesting and the voice acting is very well done and dare I say more consistent.
Overall, an improvement and a solid show overall. 10/10 Bethany Cox