Sir Amik Varze is the leader of the White Knights of Falador. While King Vallance, the current monarch of the Kingdom of Asgarnia, officially remains the ruler, Sir Amik has ruled in his stead for the past seven years. This is apparently because the king is bedridden, but as no one has seen him for years, this remains unconfirmed.
Sir Amik is also a member of the Lumbridge Secret Council encountered during Recipe for Disaster - to rescue him from the Culinaromancer's magic, players must prepare a creme brulee using a variety of exotic ingredients.
Like many knights in RuneScape, Sir Amik Varze's name is a play on a word or phrase, in this case "ceramic vase."