Planetouched is a general category to describe someone who can trace his or her bloodline back to an outsider, usually a fiend or celestial. All planetouched creatures have the planetouched subtype.
The effects of having a supernatural being in one’s heritage last for many generations. Although not as dramatically altered as a half-celestial or a half-fiend, planetouched still retain some special qualities.
The two planetouched varieties described here are the most common. Aasimars are humans with some trace of celestial blood in their veins, and tieflings have some fiendishness in their family tree.
Aasimar
Aasimars are usually tall, good-looking, and generally pleasant. Some have a minor physical trait suggesting their heritage, such as silver hair, golden eyes, or an unnaturally intense stare.
Most aasimars are decidedly good-aligned. They fight against evil causes and attempt to sway others to do the right thing. Occasionally they take on the vengeful, judgmental aspect of their celestial ancestor, but this is rare.
Aasimars usually like a fair, straightforward contest. Against a particularly evil foe, however, they fight with utter conviction and to the death.
An aasimar is a Human with one level of the Celestial Creature template.
Tiefling
Many tieflings are indistinguishable from humans. Others have small horns, pointed teeth, red eyes, a whiff of brimstone about them, or even cloven feet. No two tieflings are the same.
Tieflings are sneaky, subtle, and generally conniving. They prefer to strike from ambush and usually avoid a fair fight if they can.
A tiefling is a Human with one level of the Fiendish Creature template.