Runemaker

Runemaker is a merchant NPC that sockets Runes into equipment such as weapons, armor, and pickaxes. Despite his name, he does not create runes; he only attachs them into gear.

• Rune Socketing: Embeds Runes from a player's inventory into gear.
• Requirements: Requires the item to have available slots (unlocked via the Enhancer) and a fee in Gold.

Stonewake's Cross: At the island's initial spawn, to the right, to the right of Sensei Moro and opposite Runemaker.
Forgotten Kingdom: At the island's initial spawn, proceed forward to the second left fork, opposite Runemaker.
Frostspire Expanse: At the island's initial spawn, proceed forward to the left fork, between Miner Fred and the Enhancer.
Crimson Sakura: He is in front of Maria, on the left side of the Aurelia Hall tree.

No quest on the wiki is given by this NPC.

He is one of the few NPCs found in every world of the game to ensure players can modify gear at any stage of progression.