I'm on the second Ben 10 series now and not really liking it so far. Gwen and Kevin started trusting and liking each other way to fast which isn't how it works. Especially considering their history as enemies. Also, the anime fan in me kinda wanted Gwen and Ben to end up together despite being cousins. Both of them also don't the love and hate relationship they had as ten year olds, making them less entertaining. I heard the writers were forced to make Ben more childish again after season 2, but that wouldn't mesh well with his older self. I might stop watching it here.