David Boreanaz has Kanji tattoos on each wrist. One means “Soul” and the other means “Destiny”. The tattoo on the his left wrist can be seen in 4.15 Orpheus. …

Giles’s tattoo, the mark of Eyghon, can be seen in the episodes 3.06 Band Candy and 4.14 Goodbye Iowa. It was first seen in 2.08 The Dark Age.

The Knights made their first appearance in Sunnydale in 5.12 Checkpoint. They seemed to be human and had a tattooed symbol on their foreheads. They used swords and wore chain mail …

Nicholas Brendon used to have his belly button pierced, but he removed the piercing because both he and Joss Whedon agreed that Xander probably wouldn’t have one. Nicholas has two …

When Buffy and Dawn climb out of the hole in 6.22 Grave, you can briefly see a tattoo on Sarah Michelle Gellar’s left hip. It is the Chinese symbol for integrity. …

In her commentary for 1.05 Rm W/A Vu, Jane Espenson points out that you can briefly see a tattoo on Cordelia’s back as she battles the ghost. Jane says that it …

In the Angel episode 4.15 Orpheus, when Willow ducks to catch the little marble, you can see a tattoo on her back.

When Giles wears a short-sleeved shirt in 6.04 Flooded, his Eyghon tattoo from 2.08 The Dark Age is missing.

When Faith is rummaging through Joyce’s make-up in 4.15 This Year’s Girl, you can’t see her trademark tattoo on her arm.

When Darla takes off Angel’s jumper in 2.03 First Impressions, the tattoo on his back is missing.