Kauoman-ni-Beretitenti

The Vice-President of Kiribati (Kauoman-ni-Beretitenti in I-Kiribati) is the vice head of State of the Republic of Kiribati. His or her constitutional functions are to exercise the duties of the President of Kiribati, temporarily or permanently, should the latter be unable to do so, and to "be responsible for such business of the government (including the administration of any department) as the Beretitenti [President] may assign to him".

The President appoints a Vice-President from among the government ministers. The Vice-President must remain a member of Cabinet throughout his or her term.

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Wikipedia