Intangibility

'''"Ooh! Ow! It burns as it passes ineffectually through me! I'm not corporeal, remember?"

- The First as Jonathan Levinson '''

Intangibility was the power, or more permanently state, to have one's own body pass through solid matter without touching it and remaining immune to harm.

This was usually the case for incorporeal beings (beings without a physical body but remain a spiritual consciousness). Incorporeal demons could be made corporeal again with a spell.

Examples

 * Ghosts and poltergiests can manifest as their visible bodies but remained unable to be touched. For instance, when Willow Rosenberg was briefly turned into a ghost on Halloween, see was able to pass through objects and walls.
 * The First Evil most notably could take the shape as any one who died but cannot be physically touched or physically touch anybody else. This lead to some suspicion to who could be the First in disquise.
 * The demon created through Buffy Summers' resurrection was invulnerable to Buffy's punches but was capable of hurting her back until Willow Rosenberg and Tara Maclay cast a spell to make the demon corporeal and allow Buffy to kill it.
 * The demon Sahjhan, along with the rest of the Granok species was rendered incorporal, forcing him to employ the skills of vampire hunter Daniel Holtz to kill Angel. In desperate veangence for his son, Angal had Sahjhan recorporealized in order to kill him.
 * After Faith incapacitated Angelus, the two entered a psychic mind walk, experiencing the moments in Angel's past but being unable to interact with anything.
 * After his resurrection, Spike returned as an incorporeal ghost. Though initially unable to touch anything, he learned to do so to some degree by concentrating. This allowed him to lift mugs and even punch enemies. He was eventually returned to physical form by Lindsey McDonald.

Appearances

 * "Halloween"
 * "Amends"
 * "After Life"
 * "Quickening"
 * "Sleep Tight"
 * "Conversations with Dead People"
 * "Orpheus"
 * "First Date"
 * "Just Rewards"
 * "Unleashed"
 * "Hell Bound"
 * "Life of the Party"
 * "The Cautionary Tale of Numero Cinco"
 * "Lineage"
 * "Destiny"