a.k.a. Sparky the Wonder Wizard

Ostler is believed to be one of the aliases of the Embermage Leodak Runehouse. He and his brother Kevamros Runehouse, rumored to be a Demonologist, are believed to have formed an alliance with the suspected Necromancer Dravot Mostin.

If this is true the party may soon decide he belongs in the Bad NPCs category.