Shock appears in almost every sound music video. He does talk, but he more often does his beatbox. As it seems he learned beatboxing from his best, Wiki Wiki Walter as he beat me in a context to see who was the best and Shock Won. Shock knows how to beatbox by going slow, fast, and extra speed.
The sound of Shock's beatbox in the music video's varies due to the letter sound. However, when Shock beatboxes in the episodes, It always sounds the same.