In ages past, giants mingled more freely with smaller humanoids. Today, the evidence of such relationships is rare at best. Characters with bloodlines of the lesser evil giants (hill, frost, and fire) may be the result of voluntary or involuntary breeding with the greatfolk. Bloodlines of stone, cloud, or storm giants, on the other hand, are more likely the results of long-ago alliances between those races and the ancient nobility of the world. In any event, characters bearing giant bloodlines tend to be massive for their race, and often share characteristics (skin and hair color, attitudes, and such) with their ancestor.
| Character Level | Minor | Intermediate | Major |
|---|---|---|---|
| 1st | — | — | +2 on Athletics checks |
| 2nd | — | +2 on Athletics checks | Power Attack |
| 3rd | — | — | Strength +1 |
| 4th | +2 on Athletics checks | Power Attack | +1 to natural armor |
| 5th | — | — | Storm giant affinity +2 |
| 6th | — | Strength +1 | Resistance to electricity 5 (Ex) |
| 7th | — | — | +2 on Acrobatics checks |
| 8th | Power Attack | +1 to natural armor | Cleave |
| 9th | — | — | Constitution +1 |
| 10th | — | Storm giant affinity +2 | Water breathing (Ex) |
| 11th | — | — | Storm giant affinity +4 |
| 12th | Strength +1 | Resistance to electricity 5 (Ex) | Resistance to electricity 10 (Ex) |
| 13th | — | — | +2 on Natural Lore checks |
| 14th | — | +2 on Acrobatics checks | Call lightning 1/day (Sp) |
| 15th | — | — | Wisdom +1 |
| 16th | +1 to natural armor | Cleave | Freedom of movement 1/day (Sp) |
| 17th | — | — | Storm giant affinity +6 |
| 18th | — | Constitution +1 | +1 to natural armor |
| 19th | — | — | +2 on concentration checks |
| 20th | Storm giant affinity +2 | Water breathing (Ex) | Immunity to electricity (Ex) |