The Tunisians come into this year's decider with a pedigree of lifting major trophies and vast experience of competing in CAF club competitions.
Etoile claimed the African Champions League in 2007, and were also victors in the Confederation Cup the year before.
They twice claimed the now defunct African Cup Winners’ Cup (1997 and 2003), and were also two-time winners of the CAF Cup (1995 and 1999), another competition that no longer exists.
To round off their collection they claimed the African super Cup in 1998 and 2008, to establish themselves as among the most successful clubs on the continent.
It makes them the only team in Africa to have claimed all trophies on offer, and one of only two worldwide along with Juventus to have claimed all the silverware in their respective confederations.
It is an impressive array of trophies when set against Pirates’ single African Champions Cup triumph two decades ago and also led to a third-place finish at the FIFA Club World Cup in 2007 when they were ousted in the semifinal by Argentine giants Boca Juniors.
The club from Sousse, a coastal city that is an important tourist destination for the country, are celebrating their 90th year in existence in 2015, though they really rose to prominence in the 1950s.
They have nine Tunisian league titles to their name, the last in 2007, and have also won the domestic cup competition on 10 occasions, including the last two seasons.
They are the third most successful club in the country behind giants Esperance (26 league titles) and Club Africain (13), and have a strong tradition of bringing in players from elsewhere in Africa, but also Brazil and, for a period, Russia.
Among the chief attacking threats are Algerian forward Baghdad Bounedjah, the top-scorer at the club, as well as Brazilian striker Diogo Acosta, signed to replace the former when he leaves for Qatari side Al Sadd after the Final against Pirates.
The team is captained by goalkeeper Aymen Mathlouthi and have eight other full Tunisian internationals in their squad, along with players from Guinea, Cameroon and Nigeria.
Other Tunisians selected for the national team squad against Mauritania in their World Cup qualifiers this past week are defenders Ammar Jemal and Alaya Brigui, and midfielder Hamza Lahmar.
The club is coached by Tunisian Faouzi Benzarti, a veteran tactician who was also in charge when they won the Confederation Cup in 2006. He is currently in his fifth spell with the team.
Etoile have enjoyed great success against South African sides in the past, winning all four of their previous matches.
They beat Ajax Cape Town 2-0 (away) and 1-0 in the CAF Cup in 2001, and most recently dispatched SuperSport United 1-0 (away) and 4-1 in the Confederation Cup last year.