User blog comment:B214/Question and Answers/@comment-95.251.22.158-20131226161430/@comment-16281343-20140102025918

The Rookies Four, to me, do have traits that represent the 4 elements just like what you said.

Rias is Fire. It's better to use Rias' love, affection and compassion when talking traits that may represent fire.

Sona is Water. Same with yours.

Sairaorg is Earth. Not just Regulus but also himself that may represent earth. Only preferring to use martial arts and his body in combat for me represents earth.

Seekvaira is Wind. Well, that's what's left. And maybe with her somewhat aloof personality, that may be linked to wind.