While it's a relief to know that Koo wasn't supposed to be taken seriously, it's still a bad design and it's a waste for a new "Majin" suck. Daima has been boring so they could have at least introduced someone cool with a decent design in episode 10. Instead it's just another boring episode, only with another shitty, ugly gag character. This won't be the last time we see Koo, either, which is a shame.