Swire Shipping Fijian Drua centre Virimi Vakatawa will start for the Barbarians in the midfield while Tuidraki Samusamuvodre is on the bench against the Springboks this Sunnday.
Former All Blacks halfback TJ Perenara will captain the side with former Chiefs player Lachlan Boshier at vice captain.
Scott Robertson has picked Argentine loose-head prop Mayco Vivas, Welsh hooker Elliot Dee, and Scottish tighthead D'Arcy Rae for his front row.
Englishman Alex Moon pairs up with Italian Franco Molina in the locks.
The loose forwards are Argentine Guido Petti and Boshier with Miracle Faiʻilagi at No. 8.
Perenara is at halfback with Tomas Albornoz at flyhalf.
The back three is made up of Scottish Duhan van der Merwe, Waratahs Andrew Kellaway and Stormers Warrick Gelant at fullback.
Vakatawa and Alex Nankivell are in the midfield.
On the bench are Leonel Oviedo, Oli Kebble, Pedro Delgado, Izack Rodda, Liam McConell, Santiago Arata, Harry Plummer and Samusamuvodre.
The Barbarians will face South Africa at 3am Sunday at Nelson Mandela Bay Stadium.
