Band Logo's

 

The band's phoenix logo (which the band named "Mithra") bears the phrase "Provehito in Altum", the band's motto. Roughly translated from Latin, this means "Launch forth into the deep"; but a more stylized version would be "Rocket in(to) High(ness)". The logo was primarily used for promotion of the band's debut. - Wikipedia

With the release of This Is War, 30 Seconds to Mars introduced a new logo, known as the Triad, which refers to "group of three", hence the three sides of the triangle. - Wikipedia

A Beautiful Lie, the new Trinity logo was created consisting of three skulls and three arrows pointing inwards, along with the band's name and motto. - Wikipedia

                                             The Echelon

The Echelon is a street team for the band 30 Seconds to Mars, which helps in bringing friends to the shows, phoning local radio stations to request the band's songs, putting up posters, posting to band forums or related bulletin boards online, voting for the band in official award nominations and maintaining magazines or websites dedicated to the band. It is also the name of one of their songs in their debut album 30 Seconds to Mars. In regards to the Echelon, Jared Leto said the following:

"Some people ask us if this is a cult; I say this: It's something special. It's not for everyone - it's only for those who understand."

- Wikipedia.