adventure I NEED HELP!

[saratonin 28]

Ok, so I know this isn't a story but i need help. I am currently working on my OC's backstory and i'm kinda stuck. So, i need another pony to write about and what i could add to help me get in the writing mind set. I have a set of ponies and a brief summary:

Capricorn: Male, Unicorn: He was Starswirl's partner and was the first Changeling king. He was erased from history when he was bitten by a Changeling maggot in case the ponies would begin to fear Starswirl as well, Starswirl was ordered by King Anubis to destroy any trace of Capricorn's connection to the Royals or Starswirl.

King Darus: Male, Alicorn: He was the Alicorn of Justice and the brother of Cosmos (Celestia and Lunas' father). He married Princess Nyah (The Alicorn of Nature and the cousin of Galaxia) and had a son named Otis. He was the king of Sendaria and was loved by his people yet he faced a constant struggle against the threat of war from the close West, past Orberia, by a land of dragons named Gnar (na-rr). 

Queen Allegra: Female, Pegasus: She was the mother of Cadence and wife of Eros (prince of Cloudsdale). She felt like an outsider as she was a Pegasus living in a world of Alicorns. King Cosmos created the Alicorn Amulets so that non-Alicorn rulers ruling beside Alicorns would be able to be on the same level. The Amulet gave Allegra magical abilities without having to possess a horn and increased strength. 

King Garin II and Queen Gillian: Male and Female, Griffins: They were the last monarchs of Griffonstone. They fled their kingdom after the Idol of Boreas was lost when Garin was fighting the Arimaspi. They had no children and their relatives where all murdered or they escaped. They ended up in Horseshoe Bay,  then they travelled past Apple Loosa (Which used to be a kingdom named Appalia) and they finally laid to rest in Saddle Arabia. They lived there for the rest of their life. What can i do to make this more interesting and have more depth?

P.S: I have the whole timeline of most species and their kingdoms and rulers from before Equestria was created, so if you want to know then i can tell you.

Thanks!

[Shadow Beam 1,179]

Since this seems to be revolving around helping with writing instead of showcasing a piece of your own, I believe it would be more appropiate for AK Yearling's Writing Resources. Please do consider reading the section specific descriptions before posting.

Have a lovely day and good look with the writing. ^^