The most current zero-g Vocaloid came out hot on the heels of SSM Internet's release of megpoid.  Actually sporting a character design, Sonika's green and yellow color scheme has made it into moderate canon, and she even has her own Japanese comic strip.  Her vocals are a major improvement over Prima, and can sing bilingually, though that may be an unintentional side effect.  Sonika's vocal range and tone is similar to that of Luka, so much so that it can be indistinguishable at times.  She has made it onto the Vocaloid countdown only once in a duet with GUMI called Green Green.

Recently, Sonika has been involved in some controversy with zero-g's redesign contest.  Her new box art, sporting a more revealing top, yellow zipper jacket, and shining tattoos, she is now by far the most detailed of the Vocaloid character models.