This OC was created by @Plasmakitty906 

Name: Streamtooth

I like the prefix Stream-.

Age at death: 32 moons

That's really young.

Gender: Tom

Ya!

Rank: Warrior, then rouge

Ok

Looks: Pale-gray tabby tom with white stripes going along his tail and black patches. He has blue-green eyes.

Cats can only have blue eyes if at least 50% of their pelt is white, and it seems a little weird that he has white stripes on his tail and black patches, instead of having them both be the same color. I like the gray pelt, though.

Personality: Stubborn, hates everyone he meets, wants nothing to do with his mother, ambitious, likes to fight, doesn't trust anyone other than his father.

He has a lot of flaws, and it is a little weird that he hates everyone he meets, no matter what.

Father: Thistletail- Pale-grey tom with black patches and dark-blue eyes.Mother: Koi- Pale-ginger tabby she-cat with white stripes and green eyes, she used to be a kittypet.

Thistletail is cannon. He is a cat in Code of the Clans.

Siblings: None

Good. Not every cat needs siblings.

Half-brothers: Thymewhisker- White tom with ginger patches and amber eyes. Littlestep- Pale-ginger tabby tom with green eyes and white stripes on his front paws.

Littlestep is also cannon. He is a cat in Goosefeather's Curse.

Mate: Cloudleaf (Formerly)- Ginger she-cat with hazel eyes and black splotches.Kits: None

Ok. I like the suffix -leaf.

Clan: PixieClan (Formerly), The Dark Forest

That's a really weird clan name. Cats don't know what pixies are.

Before Streamkit was born, his parents, Koi and Thistletail, had a forbidden friendship. Noooooooooo! Not another forbidden relationship! Thistletail wanted to leave his Clan because he thought they were weak, and join The Dark Forest to become stronger. Meanwhile, Koi was an ex-kittypet, and she had been training and became a warrior. One night, Thistletail came over to the PixieClan border, and promised her something. "If you continue my bloodline with kits, I will grant you unlimited power." To Koi, this sounded great, seeing she wanted to be the leader of PixieClan. So she took his offer. 3 moons later, Streamkit was born, and the Medicine Cat apparently saw evil in him. "Bloody...grey." Was the omen delivered. I like that the prophecy didn't mention his name, but it seems a little short. Streampaw had a regular apprenticeship...except for his father training him in his dreams. He wanted to be with his father's Clan, not his mother's pitifully pathetic Clan. But he coudn't leave, he had a crush on one of the apprentices: Cloudpaw. When he became a warrior, named Streamtooth, he took Cloudleaf and him out into the forest to live in NatureClan. Cloudleaf refused, saying that they were disobeying the code. He then left alone, away from Cloudleaf, and lived as a rouge, looking for NatureClan. But when he got there, they refused to make him a warrior there. Outraged, he left all the Clans, and lived as a rouge. But this life was hard. One night, he ate a mouse. He ate a poisoned mouse. Was it rotten, did it have Two-leg poison on it or was it something else? He died due to the poison, foaming at the mouth, and called for Thistletail in his last breath. But his life wasn't over yet. In The Dark Forest, he wanted to put a curse on everyone who rejected him. He cursed Thymewhisker, making him get taken away by the twolegs. He cursed Littlestep, Why did he curse them? and got him a scar on his muzzle. He cursed Koi, and made her die getting hit by a monster. He even cursed Leafstar, the NatureClan leader at the time, making his kits die as apprentices. But he had something special in store for Cloudleaf. He wanted her to die a gruesome death. And she did, plummeting off the side of the gorge to her death. He wanted to destroy her, and killed her mate, he even killed off all her kits until there was only 1 left. He thought all this was well, until during The Dark Forest battle, Cloudleaf killed him by slashing his throat. He faded, and never returned. Who knows where his soul is now...

Overall I would give Streamtooth a 5 out of 10, because of his parents's forbidden love, him going to the Dark Forest without a really good reason, and the unrealistic clan name. I think you should at least have him kill one cat before he goes to the Dark Forest. If you want, you can resubmit him with some of the corrections I made for a better score.