Benny: she's a good singer and her parents admire her voice including the squad, she's a bit shy, but she's gaining getting used to singing in public, she wants to be like mark, happy and excited, instead of being shy (that's why her hair color is cyan)

Sandy: wants to be different with mark, only to end up being the same, her look changed though, but she still have strong connection with her twin, wants to be a gamer for reactions, mark joined in because it could be more enjoyable if there two reactions

Mark: he just here to bring joy, he tries his best to comfort his friends and squad, he wants to be a gamer with sandy

Ben: they guy who always acts tough, but still kind to the squad... A little bit, he wants to get the perfect job just so the squad can stay much more longer, he does enjoy being with them, he just don't know how to show it