Converting "generic setting" second edition monsters

[BOZ]

some preliminary stats for the vagabond (if this can even be done):

Vagabond
Medium? Outsider (Incorporeal, Native?)
Hit Dice: Xd8+X (X hp)
Initiative: +X
Speed: X ft (X squares)
Armor Class: X (+X size, +X Dex, +X natural), touch X, flat-footed X
Base Attack/Grapple: +X/+X
Attack: X +X melee (X+X)
Full Attack: X +X melee (X+X)
Space/Reach: 5 ft/5 ft
Special Attacks: psionics
Special Qualities: create host, darkvision 60 ft, detect vagabond, immunity to (non-psionic) mind-affecting effects, incorporeal traits, inhabit host, reanimate corpse
Saves: Fort +X, Ref +X, Will +X
Abilities: Str X, Dex X, Con X, Int 18, Wis X, Cha X
Skills: X
Feats: X

Environment: X
Organization: Solitary
Challenge Rating: X
Treasure: X
Alignment: Often neutral
Advancement: X
Level Adjustment: +X?

 

[Shade]

I think we can modify this to suit our needs:

If a fiend wishes to possess a creature, the fiend's ethereal form must be adjacent to its desired target. A protection from evil spell (or similar effect) makes a creature immune to possession attempts. An unprotected target of a possession attempt must succeed at a Will saving throw (DC 10 + 1/2 fiend's HD + fiend's Cha bonus) to avoid possession. Evil targets of a possession attempt take a -2 circumstance penalty this saving throw, and a target of a possession attempt who is in the middle of committing an evil act takes a further -2 circumstance penalty.
Once a creature succeeds at a save against possession, that fiend cannot attempt to possess that creature again for 24 hours. On a failed save, the creature is possessed.

A fiend in possession of a body becomes a part of the victim, aware of what is going on around the creature that they possess. It can see and hear as well as the victim can. A possessing fiend can, at any time, speak mentally to the creature that it possesses in a language that the creature can understand, although if the victim isn't very intelligent, its understanding may be limited.

 

[BOZ]

some of it, but no saving throw would need to be made since it would possess only willing targets and has no form of control over the target's thoughts or actions other than "hey, why don't we do this..."

 

[Shade]

some of it, but no saving throw would need to be made since it would possess only willing targets and has no form of control over the target's thoughts or actions other than "hey, why don't we do this..."

Agreed. But some of the mechanics for getting it into the creature's body and its senses while within the victim could be used.

 

[BOZ]

any ideas for a place to start with the stats?

 

[Shade]

Yeah, Str -.

But seriously, I'd say Str -, Dex 14-18, Con 10, Wis 14-18, Int 18, Cha 18-22.

 

[BOZ]

the main thing i'm concerned about is HD...

 

[Shade]

Ahh...good point.

How about trying 10 HD, and see how that looks?

 

[BOZ]

the wacky thing is, these stats may as well be arbitrary, since it’s only going to have them for a short time. While possessing a creature, it’s only going to have access to its mental stats and psionics.

 

[Shade]

True. If it weren't for the fact that they could potentially affect player characters or their allies, I'd think a template would be enough. However, we need some sort of mechanic for if the creature resists.