Over the millennia the Church has acquired heresies.
The major ones are heresy are
Some humans remain outside of the Church
- Beastfriends (H&O 39)
- Anunnaki Cults (H&O 38)
- Children of Zuran
- Gjarti and Vuldrok Paganism (FSPC 52-63)
- Manja Cultists (FSPC 64-71)
- Zhi-Shu (Rampart) (Possibly a Compassionate Gjarti Sect)
Some aliens retain there own faiths.
- Ascorbite Shaman
- Etyri Death Gazers
- Obun Bintaru
- Shantor Sun Runner
- Ukari Banjak Taudwon
- Vorox Oklog Shaman
Cults are underground religions not practised openly on any world within the Known Worlds. Though there maybe some barbarian worlds where they are dominant.