bad voice acting
go back to the Japanese or Korean version or whatever, this episode would have been so much better if it had had that. The voices seem amateur and forced. It adds to the characters and frankly everyone sounds goofy in the American dub, the voice actress for the purple robot, the big guy and bee especially, and the villains sound far less intimidating and more like the people you'd expect to be henchmen than villains
but other than my little rant about bad voice acting the animation was great and the storyline is better than what you'd expect if not a little cliche'd