No Gejitchi, it's not guaranteed to happen every time. But it usually does. When I had Seether, I put the cd in his boombox and he flailed around wildly because horribly loud irritating music (noise) was coming from it. The noise goes on and on for awhile then it stops and he stands there staring at you looking very ticked off. If you press any buttons it starts all over again and he flails even more frantically. If you don't press any buttons the boombox and cd go away and you still have them to use again. I thought Seether's hysterical flailing was really super cute so I put the cd in again and watched him freak out. It did NOT blow the boombox up either time. The next day I tried it again and sure enough it did blow it up that time. I think it's just the luck of the draw, but the cd has blown it up for every other character but Seether. He was a Pipotchi, maybe that has something to do with it, I'm not sure...