Just because I want my OCs to seem (somewhat) realistic, I've decided to list each OC and their biggest fear.

Uni- Being bullied again
Nyan- Being eaten alive
Celestia- Losing her crystal
Windcharmer- She acts pretty tough, like nothing scares her, but her biggest fear is losing her loved ones.
Birdeh- Never finding his purpose (there's a reason for this)
Ita- Spiders
Una- Being unable to protect her friends
Kashi- Losing Ita
Taimu- Kokoro powering off again
Kokoro- Death/Powering Off (They're like the same thing to her)
Fajī- Vicious Dogs
Mazenta- Public Speaking (She tends to be VERY shy and insecure)
Inu- Uni becoming so happy that Inu's existence is no longer needed
Tac- Lightning
Dawn- Dying without Giving Rustle what he deserves
Twilight- Losing his family
Summer- Trusting Certain People
Riptide- Losing his Loved Ones