Thirty Seconds To Mars is a band who has a symbology connection. In their albuns and the shows, the band introduces several symbols, however they never told what's their meaning, which gives them a mystery, and even related with that mystery there are expressions as "Find Argus Apocraphex" and "Provehito in Altum" used by the band. 

Nevertheless many fans, like the band members have some symbols tattooed, what give them a unique identity.