A character with a demon bloodline has one or more ancestors of demonic origin. The most common source of such a bloodline is a succubus, but any demon capable of taking humanoid form might be responsible for the character’s unusual traits. Characters with a demon bloodline may bear some minor characteristic reminiscent of such an ancestor: sinister glowing eyes, a faint smell of brimstone, or a love of brutality.
| Character Level | Minor | Intermediate | Major |
|---|---|---|---|
| 1st | — | — | +2 on Stealth checks |
| 2nd | — | +2 on Stealth checks | Power Attack |
| 3rd | — | — | Strength +1 |
| 4th | +2 on Stealth checks | Power Attack | Resistance to electricity 5 (Ex) |
| 5th | — | — | Demon affinity +2 |
| 6th | — | Strength +1 | Smite good 1/day (Su) |
| 7th | — | — | +2 on Intimidate checks |
| 8th | Power Attack | Resistance to electricity 5 (Ex) | Resistance to acid 5 (Ex) |
| 9th | — | — | Constitution +1 |
| 10th | — | Demon affinity +2 | +2 on saves against poison |
| 11th | — | — | Demon affinity +4 |
| 12th | Strength +1 | Smite good 1/day (Su) | Resistance to fire 5 (Ex) |
| 13th | — | — | +2 on Deception checks |
| 14th | — | +2 on Intimidate checks | Cleave |
| 15th | — | — | Charisma +1 |
| 16th | Resistance to electricity 5 (Ex) | Resistance to acid 5 (Ex) | Resistance to cold 5 (Ex) |
| 17th | — | — | Demon affinity +6 |
| 18th | — | Constitution +1 | +1 to natural armor |
| 19th | — | — | +2 on Perception checks |
| 20th | Demon affinity +2 | +2 on saves against poison | Damage reduction 5/good |