For aesthetic, there isn't really anything that matches the Knights of the Nine armor style that well, but it'd be mostly the heavy armor styles and have a good bright white dye and something that can hit a strong red.
First, you should be mad.I throughly enjoy the story of pelinal whitestrake and I want to take part in make a build solely dedicated or inspired by him. I need someone to tell me what’s the ideal race, class (most likely templar but I want to hear other people’s opinions), and motifs that will help me achieve my goal. Not looking to make him look exactly like pelinal but inspired in a way.
One of their arms was a 1-handed longsword, so that means 1h+shield.