* Water Tribe: Blue and white tattoos often representing the ocean and spirits.
* Earth Kingdom: Diverse designs often representing the Earth, mountains, and animals.
* Fire Nation: Typically red and orange designs, sometimes representing fire or the Sun.
* Air Nomads: Circular tattoos on the forehead representing the Air element and wisdom.
It's possible you're thinking of:
* Arrow tattoos inspired by Avatar: Fans have created their own arrow tattoos inspired by the show's themes of freedom, strength, and determination. These tattoos are not featured in the show itself.
* A misunderstanding: You may be remembering something else related to the show or a similar work of art.
If you can provide more context about what you're looking for, I might be able to help further.