These are the ranks for all optional characters in the site:
Humans
1. Human
2. Human (Rookie)
3. Human (Junior)
4. Human (Pro)
5. Human (Ace)
Shinigamis
1. Shinigami (Training)
2. Shinigami
3. Officer
4. Vice-Captain
5. Captain
Quincys
1. Human
2. Quincy (Rookie)
3. Quincy (Junior)
4. Quincy (Pro)
5. Quincy (Master)
*Note: First level Quincys are considered humans.
*Note: Shinigami (Training) are shinigamis who haven’t heard the name of their zanpakuto yet.
Hollows
1. Hollow
2. Menos (Gillian)
3. Menos (Adjuchas)
4. Menos (Vasto Lorde)
Arrancars
1. Numero
2. Privaron
3. Espada
4. Arrancar Leader
Vizards
1. Shinigami
2. Vizard
3. Knight
4. Lord
5. Vizard Leader
In order to advance to the next rank, an Administrator or a Moderator must advance you; you can also advance through events (e.g. tournaments).