SPQR

"Senatus Populusque Romanus"

- SPQR SPQR is the motto of the old Roman Empire. It stands for  S enatus P opulus q ue R omanus. In English, it translates to The Senate and the People of Rome.

It was forged during the republic but the emperors kept it and it can still be seen on some monuments in Rome.

The Lost Hero
The initials SPQR are seen on Jason's arm with an eagle (Jupiter's symbol) and 12 bar lines for his 12 years of service in the legion.

The Son of Neptune
All centurions are seen with the SPQR tattoo along with their godly parent's symbol and at least one bar line. Reyna's tattoo consists of the initials SPQR, a crossed sword and torch, the symbol of her mother, Bellona and 4 bar lines, representing her four years of service. Hazel's consist of the same initials, a hieroglyph-like symbol of Pluto, and one bar line. At the council/principia, before their quest, Frank receives his tattoo with Mars' symbol, crossed spears, and one line. Near the end of the book, Percy also receives his tattoo when he takes Jason Grace's place as praetor. His tattoo consisted of a trident, Neptune's symbol, and a line for his first year of service.

Description
When a camper arrives at Camp Jupiter they receive a probatio tablet. Once they have proven themselves to the legion, they receive a tattoo. This tattoo is deeply burnt into their arm from the heavens. The tattoo includes vertical lines symbolizing their years of service and the SPQR tattoo. They also have the symbol of their parent (unless you're a legacy, like Octavian).

This tattoo proves you are a full member of the legion. It is impossible to remove this tattoo and it is presumably quite painful to get.

Known Tattoo Bearers

 * Hazel Levesque (Pluto)
 * Frank Zhang (Mars)
 * Reyna (Bellona)
 * Percy Jackson (Poseidon)
 * Jason Grace (Jupiter)
 * Dakota (Bacchus)
 * Octavian (Apollo)