Board Thread:Speculation House/@comment-31953669-20171218222149/@comment-26018514-20171219031058

KarpToEndAllKarps wrote: Hazel Rainart.

...

Which leaves us with one possibility: he holds a grudge against Ozpin.

Allow me to recall one more quote. After their short encounter, Ozpin tells Oscar about Hazel. Ol' Ozzy says that he's

"Someone from my past. Someone who should not be taken lightly."

... I disagree with this assertion, personally, I'm guessing he's in it for a loved one, possibly one being used as a host for Salem atm or one she otherwise promised to bring back or cure using the relics, which can likely rewrite reality to the extent miracles like that are small potatoes.