Free man
Karlos is a variant of the Germanic name Charles, derived from the word 'karl'. It historically refers to a free person who was not of noble birth but held legal rights, later evolving to signify strength and masculinity.
Less common today
Karlos isn't in the latest US Top 1000. It last peaked at #1,987 in 1990.
NFL linebacker
NFL running back
Olympic bobsledder
US births per 5-year period, 1990βpresent (SSA data).