SONiKA is an English VOCALOID developed and distributed by Zero-G Limited for the VOCALOID2 engine.
She has had up to five different official appearances over the years: the first being a CGI draft by an unknown artist, the second by fantasy artist Mario Wibisono, a winning contest design by Kjbionicle, an alternative redesign by Shinia for the Taiwanese market and a design by Lpchan intended for a VOCALOID 4 release which never saw the light of day.
She is often depicted with green hair and green eyes. She wears a yellow crop top, arm warmers, and often drawn wearing shorts and boots. Her second illustration has her wearing red headphones and a floral tattoo.