What can be my gamertag for halo 3?

[Alex]

i wana change my ganertag in xbox live..but idk wat to name me as. i want a really cool ass name. like so freaking cool..i want it to sound pro and have 2 meanings pliz help

 

[Aaron]

if your into mlg make it like noobonmlg so they will be stumped. or name is after a cool character like G0ergy

 

[jose c]

lLlIteKeeperIl