Place it at the start of a clip as Viktor's entrance cue, then follow it with a short reaction sound once he appears, so the call sets up the payoff. If he still does not answer, follow it with Bruh for the deadpan reply.
このサウンドについて
This clip is one voice stretching the name Viktor into a long, drawn-out shout that lasts about five and a half seconds, with the vowels pulled wide and the ending held for emphasis. It feels funny and deliberately over the top, like calling someone from across a room and refusing to stop until they turn around.