More info about the name "Riku"
Riku is a Finnish diminutive of Richard. Richard originates in Germanic languages and means "daring power". It has been one of the most popular given names over centuries, and in different spellings all over the world. Popular with aristocracy, the name was borne by numerous kings, the most famous being Richard I of England, the Lionheart. More recent bearers include Richard Nixon, former US President, and Richard Gere, popular American actor.