Olanrewaju Ogunmefun, better known by his stage name Vector tha Viper, is a Nigerian Hip hop artist. Vector has released two studio albums, his debut album State of Surprise (SOS) and The Second Coming. He is the voice behind the Sprite commercial that has aired on most radio stations across Nigeria since 2009. In anticipation of his second studio album, he released a mix tape titled “Bar Racks”. He released his second studio album titled The Second Coming on 12 December 2012.