Well I gave this two brothers more thought tan most of you can imagine and I want you to know that I read everything you guys suggested me
 
Even before my journal I had these two mostly done Before I start with the bios I want to explain where both of them came from.
 
When Rainbow Dash was starting to succeed as a wonder bolt, as a star flyer, she started to have a little relationship with Soarin. This relationship was mostly fooling around and both of them knew it wasn`t going to last forever. Soarin ended this relationship after a couple of month, because he felt that was unfair to him and to Rainbow Dash. They both stayed as friends, but after 2 month of the breakup she started to feel dizzy and couldnt fly without feeling like she was going to puke, so she took some time off the Wonder bolts.  
She moved to Ponyville to recover, and because she did not felt like flying she stayed in Princess Twilight castle.
 
That is when he was born:
 
Gran Storm  
Full Name: Gran Storm  
Nicknames: Gran, Big, Grande  
Parents: RainbowDash and Soarin  
Age: 22
 
Son of chance. And older brother of two unrelated little siblings and fist born of both families.
 
He was born in Ponyville and was delivered in the Castle of Princess Twilight.
 
He is a cool and calm stallion. Since he was born he understood that their parent didnt love each other, but they loved him dearly, so having two families never really bothered him.
 
When he was little he had no intensions to learn how to fly, he is very comfortable on land, and even that, he is a great flyer (just like his parents). Gran loves how the dirt feels on his hooves even more than the breeze on his mane.
 
He is the type of pony who is impossible to startle or anger, but he is no pushover. His little brother has plotted with his mother to startle Gran, and every time they failed making both of them truly frustrated.
 
He has a good relationship with both of his parents but he is kind of distant, more of a loner, the independent type.
 
Having two houses growing up is never easy, if you are not Gran. He was raised knowing that having to families is normal, and that even his stepmother and father would be always with him, and could not contain his happy when he was told that he was going to be an older brother, not once but Twice. The fisrt time they talked about a younger sibling was with his mother and Stepdad Thunderlane. They asked him first if he wanted to be an older brother, and he was thrilled.
 
He is the awesome older brother. He loves both of his siblings dearly, and he is always there to help them, lend a strong shoulder to cry on, or an ear to hear. He loves to play with both of them and gladly he can experience how to be the older brother to a boy and to a girl.
 
His talent is related to weather. He likes lightening and how his hooves feel against the clouds when he makes them.
 
He is sensitive and philosophic, has the bad habit to get lost in his thoughts. (yup all about him is about how he feels)
 
He lives in Ponyville (with his mom and stepdad) but works on Cloudsdale, every morning he wakes up to have a long fly to his workplace.
 

 
After a couple of years of years been a Wonderbolts, RainbowDash had a new partner in her team. Thunderlane. He always had a crush on Rainbow Dash, but after she had her son, the idea of having a relationship never crossed her mind.  
He worked hard to get the awesome flyers attention. And when he finally caught it, he never let go. Thunderlane was romantic (without been cheesy), dominant (without been violent), Peacock-ish (without trying to get the attention of other mares) and loved Gran Storm like a child of his own, RainbowDash fell in love with the stallion that his son loved*.
 
After a couple of years, having the possibility around her head, she dropped the idea to have a kid with Thunderlane. Enough to say he almost fainted to the possibility to have a kid.
 

 
Brave Heart  
Full Name: Brave Heart  
Nicknames: Bravy, BH (Bee-Eich)  
Parents: RainbowDash and ThunderLane  
Age: 11
 
He is the little one in his family.
 
Loud, daring, fun loving colt that always gives it all on what he does. He is like his mother, cocky, and (on his own words) Awesome. He has his own flaws, like he is overconfident and sometimes his courage makes him do reckless things, which his mother gets, but wants him to stop. (Difficult to tell your kid to be careful when you are a Wonderbolts, hu?)
 
He is well aware that his family is weird, but he is not that normal himself.
 
He grew up in Ponyville but he went to flying school in Cloudsdale.
 
He has a good relationship with his parents, and with both he does different things. Thunderlane and he love to go flying together, not that with Rainbow it isnt fun, but because with his dad he doesnt feel like he is in a competition. With Rainbow he likes to practice and train, to make pranks and have intense fun. He likes the quiet and tranquility his dad gives him when flying.
 
With Gran Storm has a great relationship. His brother is the only pony ever alive who knows his biggest secret, and trusts him 100%. But even he has sometime when he gets mad with Gran, because of his calm nature he never explodes when picked on, and Brave feels like he cant know his brother and all his faces.
 
With Skyfall (Soarin and Spitfire daughter) he has a weird relationship; he knows she has a crush on him, so he tends to avoid her, because in some way Brave thinks of her as family.
 
His best friend in the entire world is Fire Cracker.
 
His cutiemark just appeared, without even realizing himself, he thinks is because of his stunts. Rainbow thinks it means that he is one with the sky but they have no idea why it appeared.
 

 
Here they are, I have a very strange feeling with those two, I feel alike them Why? With Gran Storm because I am an older sister, and with brave because I have a sister, who has a sister, which is not my sister. Weird hu?  
My dad, after my mom kicked him out of the house when I was 1 year old (because he stopped working because he had some kind of depression after I was born) and 6 years after my dad introduced me to a woman (I hate her I still do) and told me I was going to have a little sister. That was how I met my stepmother who isnt my stepmother anymore
 
my family is a little complicated XD
 

 
Hope you like them they are close to me very close