This NPC sells outfit addons. Say the exact addon name you want and he will list the required items. Hand over the items to unlock the addon permanently on your character.

• Speak the addon, e.g. first knight addon or second knight addon.
• Gather the shown items and the required gold.
• Trade them to the NPC to receive the addon.

Notes: Only exact items and amounts are accepted. Addons are permanent once earned.