When @inthesoupbowl made Kobal years back, Genasi weren't a playable race and the information on them was scattered, so some of this lore is goes against bits of DnD and Pathfinder canon, as it didn't exist at the time and we (well, mostly soup) had to go in and make it all up. I wanted to make a sheet for them to keep all of our different game's lore together (for players and DMs bc we keep expanding the universe lmao) and for others if they wanted, so feel free to use! I have some extra info for those super curious or want to use this in their own games below:
About the 4 Main Elements:
This part is pretty simple, but can be expanded on. For example, not only can their be regular fire genasi, but in our lore, this can include other types of magic fire (Blue, Holy, Black, etc). For water, they could be salt or fresh water specifically, or even ice. Those who have a strong grasp on their element can even turn their body into it to avoid physical attacks, etc (with a roll of dice, of course).
About passing genetics:
So, like it says, a genasi can only be produced with elemental x mortal, or genasi x genasi. There are no half genasi, which is part of why they are so rare to begin with. Β I thought I'd give an example to help explain this, because I think it's the easiest way.
Human x Fire Elemental = Fire Genasi. That same fire genasi x Human = 75% chance human child (likely with a elemental sorcerer bloodline) 25% Ifrit child.
Fire Genasi with human parent x Elf = 75% Half elf, 25% Ifrit.
Fire Genasi (any mortal race parent) x Water Genasi (any mortal race parent) = 25% chance fire genasi, 25% chance water genasi, 50% chance subset (ex, steam)
The types of elementals a genasi can produce works as followed:
Fire = Ifrit. Water = Marid. Earth = Dao. Air = Djinn.
If a genasi's child does not come out as an elemental race, they won't pass on the genetic possibility to have one in their bloodline, but they WILL pass on the aptitude for elemental magic for several generations.
Some of these Genasi on the sheet are PCs and NPC's, such as Kobal (topmost left) and Lymeria who is under him. Across from him is Enlil.
The two in the center there are Wilhelm (mine) who has an Aasimar parent and Dormir who is black fire specific and has a tiefling parent. The green one under them is my Serpentine stone NPC Genasi.
Might add more later! lemme know if I can clarify something!