Poseidon and Hercules.

very good choice indeed.  such an impressive boss.  the first person view where you clicked L3 and R3 to finish him off by putting your thumbs through his skull ... omg that just felt so right and yet so wrong.  my jaw dropped with excitment and shock.

i also really like cronos. so epic to take him on.

For me, there isn't a game that does boss battles as well as the God of War games. GoW starts off with bosses that would be final boss battles in other games. 

Cronos was an incredible boss, I remember when it zoomed way out and I realised it was still gameplay and not a cutscence! I was in awe. 

Hercules was great aswell, loved the intro to it, first-person-view of Hercules walking out to the arena, you realise how much taller he is than Kratos.

Hades was amazing aswell, the lighting was great. 

Hermes was done very well, I loved the chasing part of the battle. Lifting him by the leg, then cutting it off. Satisfaction.

Pretty much anytime you fought someone in the God of War games I was pumped. Never get bored of kicking ass as Kratos.

Posidon, he sounds so epic, and then kratos breaks his neck.

God damnit this is fucking blasphemy!!!!!! Where the hell is Poseidon? What kind of poll is this even half of the boses from the second part are missing!

well it's a good thing I'm not an employee at a reputable and as some guy on the internet I will use whatever acronym I damn well please.  God of War took the GoW acronym so Gears can be abbreviated some other way.  Get your own damn nickname Gears this one is taken!

some people crack your neck, some poke your eyes out, and some others will throw you off a cliff if they feel like killing you.  Kratos is an epic overkiller for doing all 3 in rapid succession #epic

Without a doubt, Cronos and Hades.

Do you realize how foolish that sounds saying a game claimed an acronym.....?  Not a big deal, just a suggestion

once a nickname is established people shouldn't start calling another thing in the same field that nickname.  What if someone had called Rex Grossman RG3?  Then we'd be talking about Robert Griffin and people would think we're talking about Rex Grossman.  It just makes things confusing and I'm not sure why people don't just call it Gears.  It's only one more character and you can't call GoW just God or something and it already is identified with that acronym.  I'm saying stop calling it that because it creates the kind of confusion you're talking about.