Leopard/lion would be easy - but not awesome.

Lune/Luna would be a fun one for you (the moon).

Leia (as in Princess) - not going to be unique though. Well, depends on your friends. It's one of the reasons I prefer to be Mon Mothma. That and the lack of being shot at and taken hostage and instead hanging around with the other strategists.

Romana. As in Time Lady. (Bit of a long shot.)

Liz II. As in the Queen.

Lynda Carter - who played Wonder Woman. Perfect time to get out your bikini, boots and lasso.