Re: Rune Giant (Pathfinder)
 

I see your confusion.
Does the monster get its +3 bonus if either of the munchkins has no big item?
In other words, one of them has a big item, but the other does not.
The wording would suggest that it does, since the one munchkin satisfies the condition that it has no big item.

Re: Rune Giant (Pathfinder)
 

If at least one munchkin in the fight lacks a Big item, the Rune Giant gets +3. The bonus does not stack if both lack a Big item.

Re: Rune Giant (Pathfinder)
 

UPDATE: The Rune Giant reads "+3 against anyone with no Big items." So I'm reversing the previous ruling to this extent: if two munchkins are fighting it and neither one has a Big item, the Rune Giant is at +6. It's not a case where it's just "+3 against Elves"; the wording here is more specific than that.

Re: Rune Giant (Pathfinder)
 

Similarly, (and you can move this from 101 if need be,) does the Kevinator from the Guild booster (+5 against Everyone) get another bonus against a helper?

Re: Rune Giant (Pathfinder)
 

No, because "everyone" isn't synonymous with "anyone." Kevinator gets a flat +5 bonus.

Re: Rune Giant (Pathfinder)
 

I'd argue the grammar on that the other way around myself. Add back the spaces - against any one gives you a bonus against one person, against every one would be a separate bonus against each of however many there were.

Re: Rune Giant (Pathfinder)
 

We are now well outside the original question, which means we've left the 101 sphere. The ruling stands.