Scorpion symbol of spiritual strength against the temptations of the self. It symbolizes the spirit of warlike, aggressive, faith sacrifice, Tattoos are a symbol of strength, personality and sometimes... to enemy, intimidation.
It can be many things, for some it's their zodiac sign. For others scorpions are a talisman to protect agains evil. For some it's the sign of familly protection. In some cultures the scorpion is a symbol of medicine. In Egypt it's supposed to help give birth. And to some it's just beautiful.