Friends...backstabbers or hand-lenders?

I have one friend...this friend often confuses me.There's only one thing that circles in my head when i think about him,SHOULD I DUMP HIM?

You guys are probably asking why?Here's a list of things that he does in school,OFTENLY,

1.brags about his wealth

2.hits people for no apparent reason

3.snatching my stuffs

4.destroying my stuffs

5.should i mention that he tore off my brother's underwear?

So,should i dump him?