Koala is focused on elevating Brazil's status in CS:GO, aiming beyond merely qualifying for majors to win top-tier events.

He began recording matches in 2021 with Ceará, had a brief stint with Elevate in 2022, and found his breakthrough with FURIA Academy, including early European play and a third-place finish in WePlay Academy Leagues.

Growing up far from major esports infrastructure, he faced limited early access and relied on late-night internet usage due to regional ping constraints.

His mother initially resisted but ultimately supported his dream, allowing him to move closer to São Paulo for better education and opportunities.

His nickname originated from a Windows stock photo, and a formative European trip spurred his pursuit of CS.

In 2026, he played his first Major at IEM Cologne, treating it as a milestone on the path toward a Tier-1 win or another Major.

Koala shifted from an entry/frag role to an Anchor/Lurker role, aligning with his strengths in strategy and communication, drawing influence from top lurkers and adapting IGL/meta rather than emulating a single Brazilian figure.

João Pfeffer, known as Koala, is a 21-year-old Brazilian Counter-Strike player from Tucuruí, Pará, ranked HLTV Prospects #15 as of July 2026.

He has won five LANs in Brazil (four with Sharks) and earned MVP at CBCS Masters Xeque Mate 2025, underscoring his rise as a top regional rifler.