The Obvious:
This man appears in his mid to late thirties, bluish-grey eyed, stocky and broadshouldered.  The few times he removes his helmet reveal a slight tanline from his eyes over his nose from the eyeslit of his helm.  His voice, while firm, has a pleasant tenor to it.  There is an optimistic glint in his eye at times, often while patrolling in the mornings.  Despite the hardships and battles fought for his vision of Law and Order, he does tend to smile a bit more than when he first arrived to the Sinfar archipelago.  Upon his back is strapped his Holy Avenger, a greatsword nearly his height that glows white when drawn, but most times hidden under his Tyrran cloak.

The Subtle:
To those who can sense it, this man radiates goodly divine energy.  I'll leave it to you and your character's abilities if this affects you in any way.

The Lore:
Sander served Tyr faithfully in Cormyr for many years, starting up with the Purple Dragon Knights before being the only survivor of a particularly brutal orc ambush.  He credited his improbable, desperate victory to a last minute, impassioned plea to Tyr to be able to bring justice to the murderers of his fallen friends.  Soon after, he quested for and joined the Knights of Holy Judgment chapter based outside of Suzail.  During the chaos of the Spellplague, he battled to try and keep order in Suzail from the would be-usurpers and dissidents taking advantage of political instability caused by the loss of so many of their War Wizards.  Despite his efforts, he watched as law and goodness failed around him.  His greatest mistake was questioning if Tyr had abandoned the lands... right before Tyr's death.  Though it had nothing to do with his moment of weakness, Sander was wracked with guilt, following his God's final communed wish to begin, reluctantly, to serve Torm.  During one of his long penitent prayer sessions, he lost consciousness... and awoke, of all places, in the lands of Sinfar.  

The "Lights:"

Sander is NOT here for you to fetishize.
Sander is NOT here to tolerate wickedness.
Sander is NOT here to fuck you.

Sander IS here to smite the unholy shit out of evil people and creatures in the name of his fallen God, using the power of Torm.  He is righteously pissed off, and looking for a target.  

If that target ends up being you, I as his player, wish you the best of luck.