Zelda inspired names

Nickname for the star Gamma Cassiopeiae given by astronaut Gus Grissom after his own middle name (Ivan) spelled backwards. Navi also relates to the prophets in the Hebrew Bible and is the name of a character in the video game "The Legend of Zelda" -- short for Navigator. Might also be a modern way to spell Navy.

Niko has been rising up the US popularity list for boys since the early 2000s, and floated lazily along at the bottom of the list since the 1980s.

Ralph has two diametrically different images: there's the suave Ralph Fiennes-type Brit (often pronounced Rafe), and then there's the Jackie Gleason blue-collar, bowling blowhard Ralph Kramden bus driver. It's all in the eye of the beholder, though its hip factor did rise when it was chosen for his son by cool U.K. actor Matthew Macfadyen.

Gone with Richard and Rick, Ricky has been falling since the turn of the 21st century. Probably still suffering from overuse in the 1990s.

Diminutive of Robert, borne by famous figures from Robbie Williams to Robbie Coltrane.

Sage is an evocatively fragrant herbal name that also connotes wisdom, giving it a double advantage. It entered the Top 1000 at about the same time for both genders in the early 1990s, but it has pulled ahead for the girls. Toni Collette named her daughter Sage Florence.

Sky may be a bit hippie-ish, but it's bright and sunny nonetheless. Sky rejoined the Top 1000 in 2013 after spending many years off the list. Sky was the choice of magician David Copperfield for his daughter, born in 2010.

Despite its somewhat menacing meaning, this name has been widely used in recent years, probably due to the appeal of its trendy on ending.

Tetra is a Greek numeral prefix meaning "four", so it could make a fitting choice for a fourth child or for an IV.