[allstargoaly]

I'm not going to assume to much but...

I think in another forum topic they said that he was unknown (maybe part of another side quest). Personally I think the hogar was put there to keep you away from that area. Most of the time, video games will put hard monsters/bosses in certain places to "guard" a specific area or item...

SPOILER ALERT->
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Like the Steelhide Crocidile. He was put there to "protect" his STEELHIDE skin (I know that you win it off him but you get the point). Gregor was there to stop you from continuing to the upper monestary.

My point is, this Hogar was probably put there to "scare" you off. The secret cave (with the seekers) is what he is most likely trying to keep you away from; even though the items aren't very good. This is what I think.