He also appears to be a bit of a playboy, seen especially in his early reactions with Clarke or his inner monologues. Knowing about the Earth trip he schooled himself as much as he could about Earth so he could protect himself and Octavia.

Bellamy is fearless, reckless, and caring

Jasper has a special gift beyond what's normal for a vampire: he can manipulate the emotions of people and vampires around him.

Quiet, Reserved, charismatic, secretive

He’s sheathed in golden armor and mounted on a white steed. At his back is a bow and quiver. His blond hair is pressed down by a crown of gold, and his face–his face is angelic, proud.

He’s almost too much to look at. Too breathtaking, too noble, too ominous. I hadn’t expected that. I hadn’t expected to forget myself or my deadly task. I hadn’t expected to feel…moved by him. Not with all this fear and hate churning in my stomach.

But I am utterly overwhelmed by him, the first horseman.

Brings plague to every town he visits.

Darkness has swallowed the earth whole.
Famine, wars and plagues wiped out almost all humans before they came—The Dark Fae.
Come to finish the job of annihilating each and every human, these fae are not from the stories we all thought we knew.
These fae are bloodthirsty, unstoppable warriors burning their way through every corner of the world.

They came to destroy the world. 

He is described as not being any good with a sword. Often, he struggles to understand his emotions and tries to mask them with sneers and sarcasm. He's admitted that he's so good at guarding his heart, he can act as though he doesn't have one.

When he's nervous, he smiles. 