Dexter

Centuries ago, Dexter was someone who dyed clothing; on TV, Dexter took care of a different kind of dying, namely murdering people as a serial killer on the eponymous series. But parents are probably not considering either meaning when they choose Dexter for their son—they just like the cool factor of a name with an “x.” It also hits a high note with singers: Elvis Costello and Diana Krall named one of their twin boys Dexter in 2006, and Charlotte Church named her son Dexter in 2009.