Duke Horacio
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In the H.A.M quests he plays the good guy who reunites the goblins and the citizens with after Sigmund tried to start a war with.
In Dragon slayer, he is the one who tells you about the dragon and how to protect yourself from a dragon by giving you a anti-fire shield.
In the Rune mystery quest, he gives you a talisman to take to the wizard's tower in order for them to figure it out later.
I am aware that he returns in other quests but as of 23/11/2021, 2009scape does not have any other quests that mention him.
Location
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He is located on the second floor of the Lumbridge Castle.
Update History
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23 November 2021
Note: If you see something not on this page that currently is in-game please let Summer know.