In his first appearance, (Comic #103) he comes to kirby's house to clean his clock. Of course, he means it literally, and does a great job. It is then revealed that Dedede and Dededoo are two completely different characters when they meet. Dedede also knows Dededoo, although their relation is not made clear.
- Full name: King Sonnn Dededoo
- Ruler of: Unknown. In fact, King could just be one of his names, as the 'K' is capitalised
- Relatives: Knows on a somewhat persona level king Dedede
Mr. Dededoo makes a few appearances later in the series.
He is referenced in One Final Song