SEGA

SEGA is a games company that is notably famous for their Sonic the Hedgehog series. They are the main publishers for the Project Diva and Project 575 series.

Voicebanks
The following voicebanks where released as part of SEGA's Project 575 series. As such the only way to obtain their voices is through the games Utakomi 575 for PS Vita and Utayomi 575 for iOS. Although through hacking their voices can be used in the Vocaloid software.

Promotional involvement
SEGA has released a few prize figures, mainly featuring the Crypton Vocaloids.