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Origins
Goblinoid
Centaur, Gnoll, Goblin, Hobgoblin, Orc
Goblinoid creatures share a common ancestor in the Black Unicorn. They can reproduce with eachother, but cross species children within this group are highly unpredictable. Most of these hybrids are sterile.
Piscitoid
Salamander, Naga, Sahuagin
Humanoid
Humanoids do not all share common ancestors; No two Sapinoids Vexilius have common ancestors. Sapinoids Albus are magical in origin and shaped deliberately to resemble humans. Sapinoids Mutanis are human half-breeds created by deliberately mixing bloodlines.
Sapinoids Vexilius can reproduce with any humanoid. Sapinoids Albus and Mutanis are not compatible, although both groups are compatible with Vexilius.
Sapinoid Vexilius
Human, Dwarf, Halfling, Gnome
Sapinoid Albus
Elves, Half-Elves, Triton
Sapinoid Mutanis
Dragonborn, yuan-ti, tiefling
Special
Fae do not reproduce.
Half-giants and humans are in the humanoid family, but may reproduce with anyone other than fae and goblinoid.
Half-orcs are in both the humanoid and goblinoid families and can reproduce with both groups.
Doppelgangers can reproduce with anyone other than fae, and of any gender.
Compatibility
| Centaurs | Demi-Humans | Dopplegangers | Dragonborn | Dwarves | Elves | Fae | Gnolls | Gnomes | Goblins | Half-elves | Half-Giants | Half-orcs | Halflings | Hobgoblins | Humans | Kobolds | Naga | Orcs | Sahuagin | Salamanders | Tieflings | Triton | Yuan-ti | |
| Centaurs | O | X | O | X | X | X | X | O | X | O | X | O | X | X | O | X | X | X | O | X | X | X | X | X |
| Demi-Humans | X | O | O | O | O | O | X | X | O | X | O | O | O | O | X | O | X | X | O | X | X | O | O | X |
| Dopplegangers | O | O | O | O | O | O | X | O | O | O | O | O | O | O | O | O | O | O | O | O | O | O | O | O |
| Dragonborn | X | O | O | O | O | X | X | X | O | X | O | O | O | O | O | O | X | X | O | X | X | O | O | O |
| Dwarves | X | O | O | O | O | X | X | X | O | X | O | O | X | O | X | O | X | X | X | X | X | O | X | X |
| Elves | X | O | O | X | X | O | X | X | X | X | O | O | X | X | X | O | X | X | X | X | X | X | O | X |
| Fae | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X | X |
| Gnolls | O | X | O | X | X | X | X | O | X | O | X | X | X | X | O | O | X | X | O | X | X | X | X | X |
| Gnomes | X | O | O | O | O | X | X | X | O | X | O | O | O | O | X | O | X | X | X | X | X | X | X | X |
| Goblins | O | X | O | X | X | X | X | O | X | O | X | X | O | X | O | X | X | X | O | X | X | X | X | X |
| Half-elves | X | O | O | O | O | O | X | X | O | X | O | O | O | O | X | O | X | X | O | X | X | O | O | X |
| Half-giants | O | O | O | O | O | O | X | X | O | X | O | O | O | O | O | O | X | X | O | X | X | O | O | O |
| Half-orcs | X | O | O | O | O | X | X | O | O | O | O | O | O | X | O | O | X | X | O | X | X | O | O | O |
| Halflings | X | O | O | O | O | X | X | X | O | X | X | O | X | O | X | O | X | X | X | X | X | O | X | X |
| Hobgoblins | O | X | O | O | X | X | X | X | X | O | X | O | O | X | O | X | X | X | O | X | X | X | X | X |
| Humans | X | O | O | O | O | O | X | X | O | X | O | O | O | O | X | O | X | X | O | X | X | O | O | O |
| Kobolds | X | X | O | X | X | X | X | X | X | X | X | X | X | X | X | X | O | O | X | O | O | X | X | X |
| Naga | X | X | O | X | X | X | X | X | X | X | X | X | X | X | X | X | O | O | X | O | O | X | X | X |
| Orcs | O | O | O | O | X | X | X | O | X | O | X | O | O | X | O | O | X | X | O | X | X | O | X | X |
| Sahuagin | X | X | O | X | X | X | X | X | X | X | X | X | X | X | X | X | O | O | X | O | O | X | X | X |
| Salamanders | X | X | O | X | X | X | X | X | X | X | X | X | X | X | X | X | O | O | X | X | O | X | X | X |
| Tieflings | X | O | O | O | O | X | X | X | X | X | O | O | O | O | X | O | X | X | O | X | X | O | X | O |
| Triton | X | O | O | O | X | O | X | X | X | X | O | O | O | X | X | O | X | X | X | X | X | X | O | X |
| Yuan-ti | X | X | O | O | X | X | X | X | X | X | X | O | O | X | X | O | X | X | X | X | X | O | X | O |