Creating a Custom Devil NPC

[Joshua]

I'm working on a new NPC for my campaign and I want to make him a Devil (Immolation) but I want to make him a bit less powered than the one in Bestiary 2. Maybe "level" him down a few. But I want to keep all the other stats aside from the ones I remove, because I plan on him being a pretty big character and more than just a combat option.

I could do this old-school... Just tweak it on a paper character sheet... But why would I want to do that?! I'd much rather mess with him in HL. I see that the "Customized?" option can be checked on the "Background" tab but all I see that changing are feat options and skill points. I want him to have ultimately fewer skill points, slightly reduced AC, that sort of thing. Yes, yes... I could just allocate fewer skills and feats, and that'd do half the work, but then I'd have reported errors, and that drives me nuts.

Is there any way to edit a base creature without having to completely recreate it in the editor? Or is there a way to just create a "generic" Devil NPC as a race and then let me level him like a standard race?

[Mathias]

The "Young" template, perhaps?

Down-HD monsters do need to be created as new monsters.

[Joshua]

Thanks, I'll give that a shot.