I was thinking on building him in a guardian set mixed with HP.

Does anyone else have this void to give me some tips on how to gear and build him?

I basically see him in two places. He makes a very solid arena go-second team champ. He also enables unkillable CB teams.

If you aren't already at least 2-keying UNM, I would suggest looking on deadwoodjedi for teams involving him.

I can't run unm cb yet. But I am working towards it.

Yeah i know he shines like a golden penny in arena but I was wondering what stats should i mainly focus on?

since hes a HP champ obviously HP% would be a key stat, but should i work on crit rate or crit damage? how much speed should i try to get on him 

It really depends on where you want to use him. Are you going to put him on arena, or on CB?

he can hit friggin hard ive noticed in some arena match ups with him in their team 

Most likely Arena for his A2 and A3,

Building him up on crit damage, immortal and speed