What is king of samoa?

As an AI language model, I cannot give information on the current king of Samoa as there is no such position. Samoa has a parliamentary system of government with a constitutional monarchy. The current head of state of Samoa is Tuimaleali'ifano Va'aletoa Sualauvi II, who assumed the role in 2017 after the death of the previous head of state, Tui Atua Tupua Tamasese Efi. The role of the head of state is largely ceremonial, with executive power being held by the elected government.