From 2004 until 2007 the series was published by Dark Horse Comics.

The first issue was published on 21 May 2003 by Dark Horse Comics.

The first issue was published on 26 May 2004 by Dark Horse Comics.

The first three volumes were published by Dark Horse Comics.

No further volumes will be published by Dark Horse.

The series was published by Dark Horse Comics beginning in 2001.

The first issue was published on May 6, 1998 by Dark Horse Comics.

The title had previously been published by Dark Horse Comics.

Instead, it was published in print by Dark Horse Comics.

A comic book prequel was published by Dark Horse.