This is an average episode. I didn't like when Gwen yelled at Ben about his crimes in the RV. I thought it would be Kevin destroying the city. Kevin also knew Grandpa Max's real name, not to mention Gwen's, by saying 'smart-mouthed cousin of yours'. At the end, Kevin completely turned into a combination of all 10 aliens: Four Arms' body, legs, lower back, and 2 of his 4 eyes
Grey Matter's right eye
Ripjaws' antenna and teeth
Upgrade's upper back
4 arms (both of Wildmutt's on the bottom, one of Diamond Head's, and one of Heat Blast's on the top part of Upgrade on the back)
Ghostfreak's lines spreading across his chest and lower back
Wildmutt's nostrils on his neck
Outside of it, all that remains is his hair, ears, and pants. Enough said.