Henri Vähäkainu (born 9 March 1987), better known by his stage name Pikku G and briefly Gee, is a Finnish rapper and a start-up founder from Nurmijärvi. He became famous in 2003 under his stage name "Pikku G" which refers to his small size (= "pikku") and to "Genetic", his old breakdance name. Henri Vähäkainu's first hip-hop album, Räjähdysvaara, was the best-selling recording in the country in 2003.

The second album, Suora lähetys, released the following year, also sold platinum (more than 20,000). In 2008, he released two singles under the artist name Gee, but since 2017, after a break of years, he is touring again under the name Pikku G. In 2019, he released an album called Kilometrit.

Vähäkainu has produced other hip-hop artists with the Coach Beats producer group.

Since 2011 he is leading an IT technology company called AppGyver with his partner.