For Phantom rep you need an admin to change it for you, or to be invited into the official Phantom player faction. Although you already know that, might aswell just clear it up now.
From what I know of Phantoms, they are terrorist who come from many different backgrounds. Their stated goals are the destruction of the houses, but the rumors are they have a darker motive.
Basicly, I wouldn't consider trying to make a Phantom character until you know more about them.
The closest thing you would be able to get for the moment would probably be a Xeno.
Edit: Any Phantom saying "OMG, SOMEONE!...DAI! *pew pew* would most likely be expelled from the Phantom role-play for all eternity. They have very complicated and satanic minds, avoid them if your not one of them. They don't hesitate to kill you, no matter what you fly. (I was killed by Zapp in a Whale once)
[17:45:39] Wolfs Ghost (Murphy): Tom, you have problems. Go kill yourself.
[19:25:12] Johnny (Jam): Tomtom, I will beat you with a spoon.
[14:22:56] Prarabdh Thakur: KILL HIM WITH A SHEEP.
[17:40:48] Eagle (Junes): Tom should be slapped with a spoon.
[11:32:18] Warspite: Thank you for being so awesome Tom. <3
[18:17:36] Metano: I love you tomtom
[20:06:24] Warspite: I will seriously give you epic head.
' Wrote:Edit: also, Tomtomrawr, fappin' like a boss.