Tattoo

A tattoo is a permanent design marked on skin using inked needles. Tattoos are a common style of body art used among humans.

Tattoos of Organizations
Tattoos are often used to promote bonding between members of a certain group.

ODSTs
Tattoos are frequently displayed with pride by the Orbital Drop Shock Troopers. Melissa McKay wore a tattoo of a skull and the letters "ODST" on her bicep. Cadmon Lasky also got a tattoo of the ODST emblem on his back while he was at Jericho VII. Jacob Keyes, while not an ODST, was given an ODST tattoo of the kanji symbol for either "bastard" or "bad ass", as the meaning differs depending on who is asked. An Unidentified corporal had the words "cut here" tattooed around her neck.

Kelorists
The Kelorists of Mamore mark members with a tattoo of a cross within a circle.

Fraternities
Members of fraternities such as Sigma Chi are known to wear tattoos to signify their involvement. One such tattoo ended up blowing the cover of an ONI sent to test Rani Sobeck.

Individual Tattoos
Tattoos can also be personal decorations of individual persons. Dominique wore one such tattoo of a Besell function around his wrist. Jun-A266, a SPARTAN-III, wore a tattoo of a fist grasping three arrows on the left side of his head.

List of appearances

 * Halo: Reach
 * Halo: The Fall of Reach
 * Halo: The Flood
 * Halo: The Cole Protocol
 * i love bees
 * Halo 4: Forward Unto Dawn

Internal

 * Mark of Shame