CC is quite impressive making this whole News Intro herself just for the event of voting for her mascot fanname. Also GG and CC are working incredibly well together, they are natural yappers and feel really in sync all the time which enhances the funny all the situations they find themselves in. XD
So... two people who turned out to be good friends are each trying to convince the other to kill them because neither wants to kill her friend? Interesting situation.
Now you mentioned it, then I can see similarities between Doki/Selen and Gigi. Their voices is different, but the way they talk... yeah. Also both cracked gamers.