okay wth..

i never used mickey once, how do you call mickey?

die on purpose on an organization 13 battle i guess

If you die any major boss battle until (SPOILER)Hallow Bastion is attacked by the Heartless, and Mickey will help you. After that, only certain boss battles can be fought with Mickey to back you up. None of the (SPOILER)OXIII members have Mickey to back you up, except (SPOILER)Xaldin only.

Before you get your hopes up, id just like to warn you that as cool as mickey is in cutscenes, he sucks when u use him and usually dies in the first 30 seconds of using him