I need a good username (If i chose your, you will get a item from my inventory)

ZileanZan
ZafeZone
ZomboidZan
Zanarienavoir
Zanezertarien
Zanevapazanzer

ZANziBAR Hustler
because Milfs

zantastic_gamer
zanzilla

ZanZero

ZZ Zan

So, this is 7 hours old. Sorry, I just got home so..
But instead of bursting words here, I'll do you a solid, think it may be a better deal, nah, it's a gift, since we're not exchanging anything but good will :)

There are a few websites that help you to create names, nicknames, aliases even work for teams, websites, etc.
Have the option to use and define filters, like what you said about the Z letter and the ZAN chars, first word came to mind (same itme that this idea/suggestion, was ZANzibar, heard back when I played MGS

Well, this is what I meant, not ONE but many sites that could help you decide your awesome new identity!
blog link

and this one too, don't be too critic about their style.. if proven helpful that's all that matters! :D

Zania
Zanex
Zana
Zanriel
Zanephe
Zanreion
Zanlia
Zannah

Zanakundo or Zanax

Zannibal Lecter.

The be all end all
Zangetsu

Zanza
Zarklaz
Zanbuster
Zandzu
Zorzand
Zoozan
Ziizan
ZBladeZan
Zanab
Zanabab
ZanZoltech

Zaranoris Zanda ^^

..it can be ZaranorisZanda too, its maybe even better

Zanzeus

ZAN ZANZAN
Zan G-F

zatrazanzantrazan'aj'zanzan

Here it is: ZAN

Can't think of any good one, Zanko?

ZenMasterZan

Zandryx

Zankoku
Zanthria
Zurizan
Zolzan
Zynthrazan

Bonus: Zrvnqsr (pronounced "Zero")

Zanister

ZANzibar?
Zantaku?

Zando'zan?
Zanpakto?
Zankyria?

ZealousZanther

Zandman
ZanZan
Zonic...Zan?
ZeroZanity
ZhaZam

Zantetsuken
Zanpachi
Zanichi
ZanSanChan :v

just browse some myths or use some strange language,you will find something good