In Act Zero was a single episode of Pretty Guardian Moon, which told how Minako Aino and Artemis first became a team, and about their first mission to protect Usagi Tsukino from a group of eccentric jewel thieves.
| Actor | Role |
|---|---|
 Ayaka KomatsuNot listed | Not listed |
 Miyuu SawaiUsagi Tsukino | Usagi Tsukino |
 Keiko HanNot listed | Not listed |
 Masaya KikawadaMotoki Furuhata | Motoki Furuhata |
 Keiko KitagawaNot listed | Not listed |
 Mew AzamaNot listed | Not listed |
 Kappei YamaguchiNot listed | Not listed |
 Jouji ShibueNot listed | Not listed |
 Rika IzumiNot listed | Not listed |
| MMoeko MatsushitaNot listed | Not listed |
 Akira KuboderaNot listed | Not listed |
| YYoshito EndohNot listed | Not listed |