The Stone Golem is the first boss available in Act 1. Being the first boss, he's also the weakest.
Elite Health: 870,000
Uber Health: 18,700,000
Rockslide (Activates at half HP) Summons a bunch of rocks that stun mercenaries, stop damage, and need to be destroyed.
Enrage (Activates at half HP) Regeneration is doubled.
Magic Stone (Uber only) Reduce 10 seconds on the timer when they hit the ground.
Standard: Runestone, Emerald, Living Stone, Heart of Stone (Rare drop)
Elite: Magic Manuscript, Unknown Element, Stone of Chaos, Stone of Summon (Rare drop), Life and Death (Rare drop)
Uber: Magic Manuscript, Unknown Element