I have been scouring the web for quite a bit and can't find a conversion of those important NPCs from Planescape: Torment to D&D 3.5 (yeah, I know 4 is out but I am not sure I'll play it 
):
The Transcendent One
Ravel Puzzlewell
Trias the Betrayer
"true" Shadows
can someone convert those for me?
PS: hope I did not get the wrong forum, but this is the only section I find most appropriate.
thank you 
but I am having difficulties in calculating ability scores. can you help me with that?
Shadows and Trias I'd go with the base creature's stats, while the Ravel's and TO's original stats (see link in previous post) look workable enough (sure, not at all optimized but w/e), except for TO's Con of course. The alternative would be generating them as for PCs, that is Elite Array, allocate points from levelup then spend the 1 500 000gp (Ravel) and 2 900 000gp (TO) on their equipment.
2e stats it says they should be reworked accordingly to a similar creature... Night Hag for ravel, but who for Transcendent one?
also, why Lich for TTO? lore says it is the main character's own "mortality" given shape and sentience, and that inherits all the memories of the PC but, at the same time, loses substance and is overall extremely powerful. a physical god, to certain extent.
A human lich with 20 class levels should be about CR 22. Why do you say 27?
Wiz 5/Clr 5/Mystic Theurge 15 is 25 levels total. But yeah, I didn't think the lich thing through. It could be an Outsider (Negative, Incorporeal) just as well as an incorporeal undead, you could argue Spectral Death (pg. 120 Denizens of Inner Planes) as well. The thing is, the way Torment's engine worked, everything was really generic stat-wise. TO is an incorporeal undead-or-outsider with high level spellcasting plus maybe at-will True Resurrection since Nameless One has it 3/day. Thats it. That's all there is to him.
If you download Denizens of the Inner Planes from this section, it has true shadows and other Torment monsters in it.
I have missed that. let me see...
checked that, thanks. it only has True Shadows (called "grand shadows"). no Trias, Ravel or TTO
why Trias as a solar and not as a deva/aasimar?
EDIT: what about TTO as an incorporeal aberration? as the game-lore says
I don't think he's any more unnatural than the undead are. How about giving him the deathless type from Book of Exalted Deeds?
mm, there is an issue with that: TTO lives in the Negative Energy plane, a deathless creature would die in very little time, and instead that's where is home is.
Since TTO is a powerful divine spellcaster with easy access to (DMM Persistent) Death Ward, I don't think the negative energy would be a problem if it was deathless. Although I always interpreted the whole mortality thing as some sort of link to Negative Energy Plane that drains a person's positive energy when they die. TNO's doesn't work when he dies so someone else's prematurely activates killing the person via Strength drain and spawning a Shadow. So undead or outsider fits more, since TTO is inherently connected to the Negative Energy Plane.
thank you what about the black-barbed branches that make up his body (the only way of having a corporeal body to talk to)?
update: accordingly to game lore, TTO is the soul of TNO transcended to an higher level of being... that should make it an outsider, right? an undead outsider is not possible lol
what about the Trigit creature? those tree-like critters of Ravel?
I am having difficulties in understanding this creature
Shadow, Grand
________________________________________________________________________________
Large Undead (Extraplanar, Incorporeal)
Hit Dice: 14d12+56 (147 hp)
Initiative: +4
Speed: Fly 40 ft. (good)
Armor Class: 17 (-1 size, +4 Dex, +4 deflection),
touch 17, flat-footed 13
Base Attack/Grapple: +7/-
Attack: Incorporeal touch +11 melee (2d6 plus 1d8 x
1.5 Str)
Full Attack: Incorporeal touch +11 melee (2d6 plus
1d8 x 1.5 Str)
Space/Reach: 10 ft./10 ft.
Special Attacks: Corrupting touch, create spawn,
strength damage
Special Qualities: Darkvision 60 ft., resistance
(cold 10), shadow blur, spell resistance 20, turn
resistance +4, undead traits, unholy toughness
Saves: Fort. +4, Ref. +8, Will +12
Abilities: Str -, Dex 19, Con -, Int 14, Wis 17, Cha 18
Skills: Hide +17, Listen +20, Search +19, Sense
Motive +20, Spot +20, Survival +20
Feats: Dodge, Empowered Ability Damage, Mobility,
Spring Attack, Weapon Focus (incorporeal touch)
Environment: Negative Energy Plane
Organization: Solitary or pack (2-8)
Challenge Rating: 11
Treasure: None
Alignment: Always chaotic evil
Advancement: 15-28 HD (Large)
Level Adjustment: -
I can't understand its full attack: does it have one or 2 claws, for example? and strength damage is applied after physical damage (which is how much?)?
It has a single touch attack. According to the description it deals 1d8 unnamed HP damage and 1d8 Str damage. The Attack/Full Attack is confusing since it could be 2d6 HP damage + (1d8*1.5) Str damage or (2d6 + 1d8)*1.5 Str damage and there are probably other possibilities.
thanks. so it's a single claw, right?
can someone update the creature to be clearer?
That depends on whether you can supply their original stats... Nevermind I found them.
True Shadow: Dread Wraith. CR 11 each.
Ravel: Night Hag Wizard 5/Cleric 3/Mystic Theurge 10. Her highest-level spells are 7(wizard) and 6(cleric). CR 23.
Trias: Fallen (Is there an official template for alignment-changed Outsiders? If not, we'll just go with "swap everything Good for Evil equivalent".) Solar, change Cleric casting to Sorcerer. CR 23.
Transcendent One: Human Lich (incorporeal by means of Ghostform spell) Wiz 5/Clr 5/Mystic Theurge 15. CR 27