Emperor or king
Kyzer is a modern phonetic spelling of Kaiser, which is the German word for Emperor. The title itself is derived from the Roman name Caesar, signifying a ruler of high rank and authority.
Less common today
Kyzer isn't in the latest US Top 1000. It last peaked at #1,024 in 2021.
US births per 5-year period, 1990βpresent (SSA data).