Yes. I have made the species DueLulaMoon and I's sonas a open species. I decided that the can be so as and OC's, so if you wanna make one, feel free too! Below I'm just gonna list some important facts for both of the purposes.

IMPORTANT FOR BOTH SONAS AND OC'S:
- can have any shade of black, gray, and white as a skin color
- can have curvy (see first example) or pointed (see second example) "horns."
- can have 0-2 side spikes
- on horns and/or spikes, there can be an area in which there is a gradient (see first example or got to DueLu's art book and see her [awesomely designed] sona). Can be any colors
- Eye shape can be normal or a shape (see first example or DueLu's sona)
- Tails (only 1-3) has/have any closed in shape at the end
- can have an insane/wild side of have dealt with extreme stress or has been put through serious and constant abuse, both verbal and physical

IMPORTANT FOR OC'S:
- Lives in h-e-l-l where they collect dead souls/ghosts. From there they decide if they should be let free in the h-el-l or be put to torture

Hope you like my species! Please feel free to comment if you have any questions