What exactly are giant humanoids?

[Lethe]

Ekundayo is using a bow as he sohuld and i had him kill undead cyclopses and mature athach.. they look like giant huanoids but I dont see favored enemy bonus anywhere in comba log.

Wish i checked before so cant say if it works with normal cyclops or trolls.

[TinyHowie]

That cyclop is undead creature, athach is abberration.

[corisai]

Trolls, Giants (living one!).

[Morgian]

Giant humanoids are living critters like ogers, giants or trolls.

Anything that is undead falls under that category.

Athach and other unnatural beings (you saw their 3rd arm?) are grouped as aberrations. All the cthulhoid monsters are in that category too.

The bonus is useful against constructs, since there are powerful golems around, undead, who are always a favorite, and fey are recurring opponents (including nymphs, redcaps, Nyrissa, the defaced sisters, etc.). Magical beasts and animals are also a theme, like hydras, owlbears and wyverns.
There are way more categories than choices, so pick what you like best, and prepare in your 3rd level spell slots instant Enemy, which turns any target in your most favored enemy.

[Gorgeous_Joe]

The lack of information for new players on this topic is quite bad. Even googling it brings up a lot of confusing info.

[Sotanaht]

Originally posted by Morgian:

Giant humanoids are living critters like ogers, giants or trolls.

Anything that is undead falls under that category.

Athach and other unnatural beings (you saw their 3rd arm?) are grouped as aberrations. All the cthulhoid monsters are in that category too.

The bonus is useful against constructs, since there are powerful golems around, undead, who are always a favorite, and fey are recurring opponents (including nymphs, redcaps, Nyrissa, the defaced sisters, etc.). Magical beasts and animals are also a theme, like hydras, owlbears and wyverns.
There are way more categories than choices, so pick what you like best, and prepare in your 3rd level spell slots instant Enemy, which turns any target in your most favored enemy.

Fey might sound like a good choice, but in spite of having huge impact on the story, those kinds of creatures are rare to fight. You fight two defaced sisters and rare few nymphs mostly on bald hilltop. The redcaps are slightly more common, but they still only appear in a few areas.

Undead and Magical Beasts are the best two choices. Undead have almost two whole chapters dedicated to them, and Magical Beasts are everywhere. Note that Owlbears and such count as Magical Beasts, not animals. Animals are pretty much ONLY things that exist IRL, so Wolves and a couple of bears, that's it. Giant Spiders are actually Vermin in pathfinder, so they don't count either.

Humanoids (non-monstrous) are also a good pick, specifically Humans if it makes you choose.

[Krakenlord]

Having fey as favored enemy will be extremely useful in the late game, trust me. If you have to choose undeads or fey, I'd choose fey. The late game areas are littered with fey monsters that are harder than everything that came before them combined.