I'd have had Ursiel's pinnacle combat skills at Superb instead of Fantastic, just one short of Shiro's Fantastic Weapons.

Possible, but he seems to be a pretty crazy powerhouse ... still Weapon: 8 claws are probably enough.

EDIT: Ursiel's stats reshuffled to top out at Superb.

Thorned Nhamshiel should not have a base human form at all; he is the Fallen, entirely taking over the mortal host. THAT is why he was so angry at Dresden wielding Soulfire against him.

He may use his combat-form 100% of the time, but I think the ability to change is fundamental to Denarian nature.

Also, he should not have recovery. He should have toughness instead; he did not recover from Harry's attacks even a day later (anyone with recovery would have recovered in only scenes) but he did survive being hurled completely through several walls.

IIRC it's said somewhere in SmF that all the Denarians have impressive healing abilities, so I made that part of the 'basic Denarian template'. Still, I think you're right here; it's been removed.

In SmF, Kincaid manages to take out several Denarians, each with a single shot.  In one case, he manages to take out two with the same bullet.

I'm trying to figure out how he managed to do this under the rules, given his stated stats and with your average Denarian having mythic toughness.  

My take is that most Denarians DON'T have Mythic Toughness. The idea that Denarians tend to be plot device level characters isn't really supported by the books -- most of what they've been seen doing in combat is not that impressive compared to, say, Morgan or Luccio. Harry is usually able to fight any one Denarian on pretty even terms, barring Nicodemus.


I'd give most Denarians Inhuman Toughness, reserving supernatural and mythic levels for those like Ursiel. My stats have the Obsidian Statue Denarian as having a physical stress track of OOO(OO), Armor:1, +1 mild consequence, for example.

Thorned Namshiel
High Concept: Denarian Archmage
Other Aspects: Ancient Arrogance

Skills (combat form)
Fantastic (+6): Conviction
Superb (+5): Discipline, Lore
Great (+4): Endurance, Fists, Might
Good (+3): Alertness, Athletics, Weapons
Fair (+2): Contacts, Resources, Scholarship, Stealth
Other skills default to Average.

Skills (human form)
Fantastic (+6): Contacts
Superb (+5): Lore, Discipline
Great (+4): Conviction, Resources, Rapport
Good (+3) Endurance, Presence, Deceit
Fair (+2): Alertness, Investigation, Weapons
Other skills default to Average.

Powers:
Beast Change [-1]
Supernatural Recovery [-4]
 The Catch: holy stuff [+2]
Demonic Co-pilot [-1]
Evocation [-3]
Thaumaturgy [-3]
The Sight [-1]
Refinement [-8]
Lawbreaker (First) [-2]
Sponsored Magic (Hellfire) [-2]
Human Form [+1] affecting:
Claws [-1]
Inhuman Toughness [-2]
 The Catch: holy items [+1]
Spell Eater [-2]: see Namshiel's entry in Our World

Specializations
Evocation - Elements: Fire, Spirit, Water; Control: Fire +2, Spirit +3, Water +1; Power: Fire +2, Spirit +3, Water +1.
Thaumaturgy - Control: Entropomancy +1, Summoning/Binding +2; Complexity: Entropomancy +1, Summoning/Binding +2

Focus Items
Hellfire Ring (+1 Offensive Control with Fire and Spirit)


Stress
Mental OOOO (+1 mild consequence in combat form)
Physical OOOO(OO), Armor:1
Social OOOO +1 mild consequence

Total Refresh Cost: -27

Notes: Probably the strongest Denarian in pure spellcasting might, Namshiel can throw 11-shift spirit evocations if he intends to kill with them.

Tessa (Polonius Lartessa)
High Concept: Denarian Mantis-Freak
Other Aspects: Wife and Rival of Nicodemus Archleone; Two Millennia of Experience

Skills (combat form)
Fantastic (+6): Discipline
Superb (+5): Conviction, Lore
Great (+4): Athletics, Endurance, Fists
Good (+3): Alertness, Might, Weapons
Fair (+2): Contacts, Resources, Scholarship, Stealth
Other skills default to Average.

Skills (human form)
Fantastic (+6): Resources
Superb (+5): Rapport, Discipline
Great (+4): Conviction, Lore, Contacts
Good (+3) Deceit, Presence, Athletics
Fair (+2): Alertness, Endurance, Weapons
Other skills default to Average.

Powers:
Beast Change [-1]
Demonic Co-pilot [-1]
Supernatural Recovery [-4]
  The Catch: holy items [+2]
Evocation [-3]
Thaumaturgy [-3]
The Sight [-1]
Refinement [-6]
Lawbreaker (First) [-2]
Lawbreaker (Second) [-1]
Sponsored Magic (Hellfire) [-2]
Human Form [+1] affecting:
Claws [-1]
Inhuman Speed [-2]
Inhuman Toughness [-2]
 The Catch: holy items

Specializations
Evocation - Elements: Air, Earth, Fire, Spirit; Control: Air +1, Fire +2, Spirit +1; Power: Air +1, Fire +2.
Thaumaturgy - Control: Biomancy +2, Crafting +1, Summoning/Binding +1; Complexity: Biomancy +1

Focus Items
Lightning Ring (+1 Offensive Power with Air and Fire)
Chitin Ring (+1 Complexity with Biomancy)


Stress
Mental OOOO (+1 mild consequence in combat form)
Physical OOOO(OO), Armor:1
Social OOOO +1 mild consequence

Total Refresh Cost: -26

Notes: One of the stronger Denarians in spellcasting, Tessa can throw 8-shift fire evocations (10-shift with her First Lawbreaker bonus); her Law-breaking biomancy is also quite frightening.

Rosanna
High Concept: Denarian Sorceress
Other Aspects: Facade of Innocence, Fire Away!

Skills (combat form)
Superb (+5): Conviction, Discipline
Great (+4): Alertness, Endurance, Fists
Good (+3): Deceit, Lore, Athletics
Fair (+2): Contacts, Resources, Stealth
Other skills default to Average (physical) or Mediocre (otherwise).

Skills (human form)
Great (+4): Deceit, Presence, Discipline
Good (+3): Athletics, Alertness, Contacts, Lore, Conviction
Fair (+2): Endurance, Guns, Investigation, Resources, Stealth
Other skills default to Average (physical) or Mediocre (otherwise).

Powers:
Beast Change [-1]
Demonic Co-pilot [-1]
Supernatural Recovery [-4]
 The Catch: holy stuff [+2]
Evocation [-3]
The Sight [-1]
Refinement [-1]
Sponsored Magic (Hellfire) [-2]
Lawbreaker (First) [-1]
Human Form [+1] affecting:
Inhuman Toughness [-2]
 The Catch: holy stuff
Wings [-1]

Specializations
Evocation - Elements Air, Fire, Spirit; Control: Fire +1, Spirit +1; Power: Fire +1.
Thaumaturgy - Control: Entropomancy +1

Focus Items
Soul Ring (+1 Defensive Power with Spirit)


Stress
Mental OOO (OOOO +1 mild consequence in combat form)
Physical OOOO(OO), Armor:1
Social OOOO (+1 mild consequence in combat form)

Total Refresh Cost: -14

Notes: A Denarian of moderate power. Her Hellfire-backed fire magic is her primary offense, and (in combat-form) she has the mental stress track to back it up.

With a handful of exceptions, they are likely considerably more powerful than the 12 or so refresh you grant them, which is barely more powerful than a young Harry Dresden early in the series.

Well, Harry tends to come off very well against all but the very top level (Ursiel, Nic, Tessa) unless greatly outnumbered. And the 12ish refresh is only for the very weakest, like Obsidian Statue, who goes down to one bullet. I'd put Ursiel and Tessa at about -20, but they're exceptional.
I'd say the 'average' should be -15 to -16.

In Small Favor, they're really only that effective due to great numbers. 

(click to show/hide)

In addition, wasn't it mentioned in one of the books that all of the Denarians were spellcasters, though some were very weak due perhaps to disinterest and lack of practice?  (I.e., possibly low ratings in Discipline and/or Conviction.)  If so, this would probably indicate a minimum of Channeling and Hellfire for each, though these would be abilities not used by some of them.

If so, I don't remember it. I can imagine that they all have the *potential*, but I severely doubt the thug-types like Ursiel and Obsidian Statue actually ever bothered to learn.