|Abilities|| Demonic powers|
|Special abilities||Swallow the Ghostly Fireball to enhance his power|
|Home World||The Bronze Dimension|
|Alternate counterpart(s)||Wang Da Dong (The Gold Dimension), Xia Tian/Gui Long & Ye Yu Ce (The Iron Dimension)|
|First Appearance||Round 34, The X-Family (flashback)|
|Portrayed by||Jiro Wang|
Impersonating Gui Long Edit
Because Zack bears a strikingly similar appearance to Gui Long (except he does not have the skull mark on his neck), he been mistaken as Gui Long on many occasions, including the assassination of Bing Xin, as well as Fire Ant Girl and the leader of Bei Cheng Wei (北城衛).
When Xia Tian finds a way to become stronger than him, he is driven back to his dimension.
Angel 'N' Devil Edit
He is revealed to be You Wang's son, but not revealed whether blood relation son, first son or second son. He is banished by You Wang. He did not appear in the series, only mentioned.
Zack is an incredibly powerful power-user of darkness. Like many other characters, he has displayed the ability of super-speed.
Ghostly Fireball (鬼靈焰火球)Edit
Zack can control the "Ghostly Fireball" (鬼靈焰火球) - a fireball that absorbs his target's energy and drain their powers before killing them with it. He can also swallow the fireball to temporarily increase his power.
The Iron Dimension Edit
The Gold Dimension Edit
Zack is one of the only two characters to have an English name. The other being a Chord.