

A versatile and experienced Brazilian midfielder whose career has been a journey through the competitive tiers of South American and European football.
Guilherme Costa Marques, known mononymously on the pitch, embodies the journeyman spirit of modern football. The Brazilian midfielder built his early career at Desportivo Brasil before making his mark in Europe with clubs like Levski Sofia in Bulgaria and Legia Warsaw in Poland, where he won league titles and experienced continental competition. His style is that of a technical, adaptable central player, capable of contributing in both defensive and attacking phases. After returning to Brazil, he brought his European experience to clubs like Atlético Mineiro and currently Atlético Goianiense, providing stability and savvy in the engine room. While not a flashy superstar, Guilherme's longevity and consistent performances across multiple leagues and countries speak to a reliable professionalism highly valued in the game.
1981–1996
The first digital natives. Grew up with the internet, came of age during 9/11 and the 2008 crash. Highly educated, deeply indebted, slower to marry and buy houses. Redefined work, identity, and what it means to be an adult.
Guilherme was born in 1991, placing them squarely in the Millennials. The events that shaped this generation — the internet revolution, 9/11, and the 2008 financial crisis — shaped the world they entered and the choices available to them.
The biggest hits of 1991
#1 Movie
Terminator 2: Judgment Day
Best Picture
The Silence of the Lambs
#1 TV Show
Cheers
The world at every milestone
Soviet Union dissolves; World Wide Web goes public
Dolly the sheep cloned
Indian Ocean tsunami kills over 230,000
iPhone released; Great Recession begins
Michael Jackson dies; Bitcoin created
Curiosity rover lands on Mars; Sandy Hook shooting
January 6 Capitol breach; COVID vaccines roll out globally
He holds a Portuguese passport, which facilitated his move to European clubs.
He played alongside Brazilian legend Ronaldinho at Atlético Mineiro in 2014.
His younger brother, Guilherme Arana, is also a professional footballer who plays as a left-back.
“My game is built on control and vision, connecting the lines from defense to attack.”