I Need Some Doggone Help or An Advice

I am planning to write a the origins of Equestria's most feared human mercenary|pirate,and I can't think of what to write.
So please,I need some doggone help or an advice!

Comments

[PonyJoel]

How and when you want to place your character in. Location and time is key cause it depends on the scenario.

[DawnLight]

There will be different locations the character will be visiting,which also includes from the Movie,here are the locations:
-Earth
-Klugetown
-The Badlands
-The Dragonlands
-Mount Aris (Abandoned before the Movie)
-Abandoned Storm King Weapons Factory
-Appleloosa

[PonyJoel]

5088564
So what you want this mercenary to do? Who is he/she going after? What's the purpose of the mercenary?

[DawnLight]

5088568
You see,he was a human who escaped from his abusive father with his little brother.Then,they kinda stumbled upon a portal,and landed on Klugetown.

He was a slave for 10 years,until Captain Celaeno offered him to join her crew (Including his little brother).He relucantly agrees.And he kinda got into a sexual relationship with Celaeno.And for the next years,he decided to quit due to unfair payment.

And he and Celaeno became rivals.

And then,he started his own crew,the Black Legion.
Varying Creatures from all over Equestria and merceanries on Earth.And then,one time he tried to assassinate Ember,but instead,his brother got burned and kinda had to give him a life sustaining device built from stolen Storm King shipments.

And for the next 10 years,he kinda fell into depression and says 'I don't wanna be the bad guy anymore!'

But his spirits lifted up and kinda got back with Celaeno and forming one crew once and for all.

[PonyJoel]

Interesting. Needs a bit of work with all the placement and such

[DawnLight]

That's why I need some help,I can't think of the plot from the beggining.