Other "paladins"?

[Volaran]

Pretty much, though I believe the designers had mentioned that a 10-level version of the Hellknight was coming. Not sure what book (possibly the World Guide?) as I could not locate the quote.

 

[Nookie]

I had this idea for a new based class called a champion. The champion is a martial warrior which has entered into a pact with an otherworldly entity. The champion would have some baseline abilitys which are shared between all pact and some pact ability unique to each type of pact.

For example a pact with some sort of lawfull good outsider would have abilities similar to a paladin

While one dedicated to an undead pact might have strange undead type abilities.

 

[James Jacobs]

The 15-level prestige class for the Hellknight we published in Pathfinder AP #27 was something of an experiment. We've re-designed the prestige class back into a standard 10-level prestige class for its inclusion in the Inner Sea World Guide (which, I believe, is finally shipping this week... WOO HOO!!!).

 

[Volaran]

Heh, I just downloaded my subscription copy and was coming post that the 10-level version was indeed in the new campaign setting. Thanks James!

 

[Viktyr Gehrig]

Doesn't really help the OP's query, but in my games Paladins can be Any Good and Blackguards can be Any Evil, as it is Good and Evil that the classes represent. I seriously despise the notion that Lawful Good is somehow "the best good" and that Chaotic Evil is "the worst evil"; if alignment were intended to work that way, there would be no purpose behind two axes of alignment to begin with.

 

[BriarMonkey]

Doesn't really help the OP's query, but in my games Paladins can be Any Good and Blackguards can be Any Evil, as it is Good and Evil that the classes represent. I seriously despise the notion that Lawful Good is somehow "the best good" and that Chaotic Evil is "the worst evil"; if alignment were intended to work that way, there would be no purpose behind two axes of alignment to begin with.

Not trying to threadjack here - but, ooooooh! I like that idea. Yoink.

 

[Alzrius]

I know the OP only wanted "official" Pathfinder material for this, but in case anyone else is interested, I wanted to mention this.

A while ago Necromancers of the Northwest posted their Pathfinder conversions of the Unearthed Arcana variant paladins. Like most of what they make, it's good stuff.