10 armies of Mara
(Satan, not necessarily a personal entity, but the forces of negativity that can arise and tempt us from not obtaining enlightenment):
- Sensual pleasures
- Discontent
- Hunger and thirst
- Craving
- Sloth and torpor
- Fear
- Doubt
- Conceit and ingratitude
- Gain, renown, and honor, falsely received
- Self-exaltation and disparaging others
(from Sutta Nipata 3.2)