I went for the Rainbow x Tempest one owo  
[MLP DTA] Next Gens #1 - OPENOwl-ClockWork also made the base for the icon things at the top owo  

 
Basic Info:  
Name : Lightning Dash (Lighting or Dash Jr. )  
Gender : Male  
Age : 22 (present age)  
Born in : Canterlot  
Lives at : Crystal Empire  
Job : Royal Guard (Captain)
 
Family:  
Parents : Tempest x Rainbow Dash (Sorin donated to Tempest)  
Siblings : Sugar Spell and Sugar Cloud (Lighting Dash’s younger sisters which are twins)
 

 
Backstory:  
Lightning Dash was born in Canterlot to his mother Tempest Shadow (Fizzle-Pop Berry Twist).  
A small baby boy that was born several weeks early with a dark blue coat and a pink mane, opened his bright blue eyes to see his mother with a messy mane and tears running down her face.  
Tempest couldn’t believe it. She was a mother. This was something she would dream about. This was something that was as rare as her horn growing back. She was told by her doctor that she would never get to have kids of her own, but she beat the odds.
 
Sadly, Rainbow dash couldn’t make it as she is the captain of the Wonder-Bolts and she is busy 24/7, so Rainbow missed out on the birth of her baby boy. This crushed Tempest as she wished Rainbow to be there but she knew that it wasn’t Rainbow’s fault. They didn’t know the baby would’ve been born this early.
 
Lighting Dash grew up in Canterlot in a private school for gifted unicorns. Unlike the other small unicorns. Lightning was raised with no magic. Tempest not able to perform her magic and Rainbow being a Pegasus, he wasn’t able to grasp the basic’s of magic.  
This caused bulling and making him very scared and unsure. He believed at a young age that he would be like an Earth Pony, just having the accessory of a horn.
 
One day when Lighting Dash was a young colt, Tempest surprised Lightning with a special event. He was able to meet King Shining Amour, brother of Princess Twilight Sparkle and father of Princess Flurry Heart.  
Shining Amour allowed Lighting to stay. They offered Tempest to stay but she had to help Spell and Cloud with their sweet café in Canterlot.  
For many moons, Lighting stayed by Shining Amour’s side and learned everything that he knew about magic and being a guard.  
Little Flurry Heart always saw Lightning by her father’s side. She claimed in front of her father, Lighting and the rest of the royal guards that Lighting was her ‘Brother’. This made Lighting feel welcomed, loved and in a family.
 
Present:  
Now, Lighting Dash is Captain of the Crystal Royal Guards. Commanding troops to protect the citizens of the Crystal Empire.  
He is known to be strong-minded and focused, never having time for fun. But only a few ponies (such as the Crystal Royal family) know that he is a caring and loves babies. He sometimes pretends that he is a serious pony that has no personality, almost like a programed robot.
 
Future:  
Something happens causing great fear, Fear that consumes his job. He is hidden for years, Hiding in the Crystal Empire Castle. Some ponies think he is dead, others think that he is missing. The royal family know his struggle.  
NO MORE SPOILERS BOIZZZZ
 

 
YEET I HAVE MADE HIM OMGGGGGG
 
so this (hopefully) bab might get to be in my Next gen  
yes, those designs are future Tempest and RD sooo yeeet