Wizzero was made from the "Zero" skin for the Xaero model for Q3 by jasonquinn "Cypher" (below is his .txt file).

I simply made some minor color changes and added a few extra details here and there, but all the major work was done by the author.

Quake3Arena skin/xaero model
"Zero"

Made by jasonquinn "Cypher" in Photoshop 
Please steal,cut or use any part of this skin as your own!

jquinn@iowalink.com

Zero is a renegade HellSpawn. Rather than being summoned by the Vadrigar into the 
Arena Eternal, Zero used the sorcery of his native E'rath (Earth, dimension 7) to 
join the games, hoping to hone the skills he would one day use to break completely
free of the clutches of Hell and the curse of the HellSpawn. 