Who is The Vice-President from The Sun, the Moon, the Stars and what is their importance?

The Vice-President is a "young brother, in his late thirties". He is a successful businessman, well educated, and respectful of his island ancestors. The Vice-President takes Yunior to the Cave of the Jagua, the mythical birthplace of the Tainos, in the hopes that Yunior will be able to complete this rite of passage with manly pride and dignity.