A Fazenda 9

A Fazenda 9 (also known as A Fazenda – Nova Chance) is the ninth season of the Brazilian reality television series A Fazenda, which premiered on Tuesday, September 12, 2017, at 10:30 p.m. on RecordTV.

This season features a cast of sixteen farmers, including returning celebrities from previous seasons of A Fazenda, Power Couple Brasil and Aprendiz Celebridades (all from RecordTV), as well previous contestants from Big Brother Brasil (Globo), A Casa (RecordTV) and MasterChef (Band) for a new chance to win the grand prize.

It marks the debut of a brand new Farm location, who moved from Itu to Itapecerica da Serra.Roberto Justus returned as host. The grand prize for the winner is R$1.5 million without tax allowances, with a brand new car offered to the runner-up.

Below is biographical information according to the RecordTV official site, plus footnoted additions.
(ages stated are correct at the start of the contest)

Since the fifth season, contestants compete to win the Key Power. The Key Power entitles the holder to open the container which may unleash good or bad consequences on the nomination process. Unlike other seasons, this season the powers are already subdivided in three envelopesː golden, silver and red.

The Key Power winner holds the golden envelope (which will always brings a good consequence) and delegates which contestantes holds the silver and red (defined by the public through of R7.com among three options) envelopes. The Key holder's choice is marked in bold.

Yuri:

Ana Paula:

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Wikipedia