Like his kin Tiviel, Derek Schubert's Hellborn is inspired by the half-demon tiefling race. Unlike the hottie Tiviel, Vaeloth isn't interested in posing. His utterly-not-cute horns are the first giveaway.
It can't be easy being a fiendish paladin, but Vaeloth's trying hard: his jagged-edged sword screams EEEVVAAALL. Everything about Vaeloth indicates he's a bad guy -- even his shield is jagged-edged and evil looking. But we'll have to take his word for it that there's no "anti" in his "paladin."
If you're looking for an armored tiefling warrior of any alignment, Vaeloth fits the bill nicely. You can purchase this miniature at Amazon.