This image is a cover art for video or computer game(s), and falls under fair use due to:
the image being used to identify and describe the subject,
no free source exists of the object in question.
The copyright for it is most likely held by either the publisher/producer and/or artist(s) producing the work in question. It is believed that the use of low-resolution images of character artwork qualifies as fair use under United States copyright law. Any other uses of this image, on Kingdom Hearts Wiki or elsewhere, may be copyright infringement. See Non-free content for more information.