You can actually catch a glimpse of this Χάρη person as he comes into view, behind Dimitris, just as the interviewee makes his "αλλά και η Αθήνα δεν παει πίσω" comment (at the very moment he says "πάει πίσω" - 2:01 - he pops out for a fraction of a second behind Dimitri's beard).:-)
Mystery solved.