Having finally done this quest, I don't think there's anything outstanding about the boy's face. That general face model has been used before – Unukalhai being the most prominent one, and I think also one of the children at Frondale's in a previous LLD event – and it's always looked a bit "off" to me. It's possible they've had that nose model on that face type all along and nobody has looked hard enough at the character model to notice. I think he just stands out because of his colour scheme.

Actually as a glamour nerd I'm more interested in his boots, which seem to be a unique model. The other children in that area have cute outfits as well. I wish they would mine more of those older models to be available to players.