Board Thread:Questions and Answers/@comment-108.64.185.255-20150316003825/@comment-30602727-20150316123816

ONA is a mascot that represents MAIKA's Catalan usage... not just changing pitches :o  It's just something the company does to appeal to the Catalan fans of VOCALOID.

In a sense, MAIKA and ONA are just one and the same, they use the same exact voicebank, it's just one of them represents one language than the other.