Working on OC back story I need some Ideas

Hey guys Im sure no one will read this but I got a summary of my Oc. the thing is I need a bit of help Im terrible at writing but I need a back story. Heres what I got

Solider Name: Dragon Blade
Gender: Male
Pony Type: Earth/Dragon
Coat color: Light Blue
Eye color: Sky Blue ...... Anger: Red Fire Extremely Pissed: Eclipse Sad/Worried: Blue flames
Mane color: Blue and orange
Tail: Dragon
Spikes: Midnight Blue
Rank: Commander
currently going through a change in height and abilities
Weapons list:
1 Sword smelted in dragon fire resistant to resistant to anything but a nuke
1 Bow
3 types of arrows: tracer, stun and regular
1 turret color white modes stun or kill
1 camera color white fits right onto turret
4 wing sets
New Lunar Republic wing set:
Titanium with featherweight spell smelted by dragon fire resistant to anything but a nuke
Color:
1 Sword Sheath located on back
2 Bow Clamps located above sheath
1 turret/camera mount
1 turret color white modes stun or kill
1 camera color white fits right onto turret
4 Titanium feathers that automatically retract into wings
1 set of Night guard armor activated with button
Speed wings:
light weight aluminum
max speed can keep up with Rainbow Dash
2 bow Clamps
1 turret/camera mount
Casual wings:
metal
nothing special except
1 camera mount
1st wing set
first wing set:
out commission permanently
damage
3 bolts of melting fire to the wings melting them to no return

please contact me if you got Ideas