Guardians get the molnija mark (Russian молния for lightning) tattooed on their necks to mark how many Strigoi they have killed. They look like two streaks of jagged lightning crossing in an X. When Rose meets Dimitri for the first time in Vampire Academy, he has already six molnija marks, meaning that he has killed six Strigoi. At the end of Frostbite Rose gets her first two molnija marks for killing Elena and Isaiah. There is another tattoo that looks like a star that means the bearer has been in battle if they have fought too many Strigoi to count.