Correct!

Dancing and music,fluid things i enjoy-Fluid=Water,Demyx is a musician
Essentially nothing but so much more-He is a nobody
Many say i'm lazy and I just like to toy-Everyone thinks he is lazy
You probably think my form is poor-His FIGHTING form
Xenophobic i'm not as I love to act goofy-He is goofy and likes to be with people

besides,the first letter in each line spells out his name in the first column...

your turn Angelroo!