Now here's Sieghart's armor, shield and halberd! This is his Undertale design, and much like the lazy animal I am I'll reuse it as a dark world version of him in Deltarune, I think its neat.
Anywho, he is a knight, though he's scared of combat he is a protector at heart and will put his life on the line if needed, with his great shield and willpower he is tanky and will do his best to stall for time by absorbing as many hits as possible instead of fighting back to win! He swings his magic halberd to deflect attacks and hopefully intimidate enemies enough so they surrender.
He's not very hopeful, so he only really gives his all for the sake of someone else, as his life does not feel as important in his own eyes... eye. He only gets one of those.