Name: Echoflight

Personally, I really like the prefix 'Echo' and Echoflight sounds kinda graceful to me so good job

Looks: Long haired plain she cat with big dark green eyes.

My only question is what color fur does she have?

Clan: Emberclan (formerly Stormclan)

I'm curious why she switched clans

Rank: Queen

Nice, we all like a queen

Age: 27 moons

Young, but seems a bit reasonable for a queen if it's her first litter

Personality: Smart, sarcastic, funny, likes being leader. She is afraid of few things, but her brother Ashspark. She can be very pessimistic and often talks about death. She is very afraid of Stormclan, due to the abuse she suffered at the paws of Snakefang.

First, why was her brother listed in that context? Second, how does she talk about death because there are two/three ways you can talk about death and each is completely different from the others. Third, was Snakefang the only cat that abused her? If so, I don't really see why she's afraid of the entire clan. That just kinda reminds me of how several cats in ThunderClan thought that Brambleclaw/start and Tawnypelt were gonna be like Tigerstar. 

Mate: Ronin, a bengal grey tom with amber eyes.

Ronin? I'm curious about the name and the cat in general. Like, are they a kittypet/rogue or a clan cat?

Kits:
Hollowkit, a brown tabby tom
Heatherkit, a cream colored she cat with tabby patches and blue eyes
Bouncekit, dark brown tabby Tom
Flashkit, white she cat with black patches
And one other I'm forgetting 

Where are these pelt colors coming from? Either they're in Echoflight's pelt (or someone in the family's pelt), or Ronin isn't the father.

Brother: Ashspark, Tigerbounce

I like the names

Mother: Shadesong

She has a calm name and I like it

Father: Whispercall

Sounds ominous

So overall, not bad! The only other thing that I have to say is that you said that the backstory was in the replies, but I didn't see anything in the replies?