if tu could make any organization member your slave for a day...

Axel. To help me get a girl

Lexaeus.
He could bitch-slap all of the atheists in my school who are trying to make me convert.

Axel.The cool factor could only be riveled por the bugging him factor.

Xemnas naturally, he has complete control over the rest of the group, which I could then force him and them to sign a paper, that he will write up and do all of the legal work on, that says they will forever be loyal to me!

>:3

Either Saïx, Vexen o Xigbar.

Since I’m still a Minor and lack the necessary..Tools, BDSM is obviously out of the pregunta (yeah, I went there).
So..God, who am I kidding; I’m the complete opposite of a Demanding Person, let alone Aggressive!

..I’ll probably just politely ask if they want to play "Portal" with me..Or if they can help me with my Homework. ; n ; I’ll be a pathetic Master, I’m too nice.

Not exactly 'slave', but 'hangin-with-mah-bro-time'.
Axel, duh.