my three OCs in depth

I have three OCs that i will use for role-playing: the draconequus insanity, the omnicorn ouroboros, and the unicorn Sky star.

Insanity
insanity is a draconequus that has a monkey paw in where discord's eagle claw would be, a lizard arm replacing the lion paw, and as well as eagle and lion legs replacing the goat and lizard legs. he has the head of a zebra pony and has a fumanchu moustache and beard combo.
Insanity isn't as bombastic and unpredictable as his elder brother discord, but shows his mischeif in another way; he grants ponies wishes that end up turning horribly wrong! some examples I have thought up and fleshed out are the creation of the parasprites, the cutie pox, and the creation of the alicorn amulet.though the wishes he grants tend to breed chaos, unhappiness, and destruction, he always cleans up afterwards without ever leaving a trace (hence how the cutie pox vanished as soon as it arrived).
insanity prefers to refer to wishes as deals that are recorded upon magical scrolls that he procures, and there are many loopholes, and clauses that enable the wish asker to "return" their wish, but as insanity loves to say "One wish per pony! no substitutions nor refunds! it is in there in black and red, clear as crystal!"

Ouroboros
ouroboros is an omnicorn (basically a wingless alicorn) that has been tasked with guarding the ultimum Ponynomicon, ouroboros has gone completely insane due to isolation. she has made several inanimate objects her "friends" , but if someone were to reach out to her and pull her out of her own madness, maybe she'll become less crazy, at the least twilight sparkle crazy.

the ultimum ponynomicon
this legendary book is basically a window of all possible realities, dimnsions, and fantasies, a window into what was, what could be, and what may come to pass, but upon a more collossal scale! such taboo knowledge would make even the most happiest and normal of ponies become psychotic and unstable. to look into the ultimum ponynomicon is to look into the eyes of god! and it is terrifying!

Sky star
sky star is a yellow unicorn stallion with a blue mane and green eyes, one night, he fell from the sky as a star and now has no clue where he's from nor who he actually is (he knows his name! he doesn't have complete amnesia!). Sky star has the ability to create miniature cosmic bodies such as stars, comets, and meteors... he is also great at making custom jewelry!
Sky star is very trusting of ponies but when that trust is broken, it will be very hard to get that trust back. he also has excellent intuition skills.