João "koala" Pfeffer (HLTV Prospects #15) has a unique genesis as a Counter-Strike player, not having been introduced to the game by an older family member and not coming from a major metropolitan area with the sort of infrastructure that can help propel a career in esports.
The 21-year-old, who has been a staple in our prospect ranking since its inception in the fall of 2025 and the highest-ranked Brazilian player so far — even breaking into the top 10 earlier this year — has had a unique journey from his native Tucuruí, a municipality of some 115,000 people in the northern state of Pará, to becoming one of his country's most touted up-and-comers.
From an early age, koala remembers an attraction to gaming from an era when internet cafes were still around. "There was a club that had a small internet cafe with a few computers," he told Dust2.com.br in 2023. "I used to just watch because I was really young and my mom wouldn't let me play. I'd spend the whole day watching others play."
koala's mother was the first obstacle he had to overcome. "I kept bugging her, asking her to let me play, to get me a computer," he said, but she wouldn't budge. "Until one day I cried so much that she gave me one as a gift for my seventh birthday."
koala wasn't allowed to play online at first, and would just load up a server on cs_assault, shooting bots to his heart's content. "It was the only map I knew how to navigate," he recalls.
Years later, having forgotten about Counter-Strike, he went on a trip to Beto Carrero World, one of the biggest theme parks in Latin America, with his mother and some family friends. One of his mother's friends had a son with CS:GO installed on his computer, and let koala give it a try. He immediately realized, after only two matches, that it was unlike any other game he was playing and that he had to buy it.
One of the questions koala often gets from the early days is how he went about picking his nickname. "Some people think I look like a koala," he told Fillipe "bt0" Moreno and Andre "Liminha" Kenzo when asked about his nickname, "but I don't think I do."
Instead, it comes from a Windows stock photograph. "I didn't know how to download photos on the computer back then," he added, "so I used the photos already on the computer, and I picked the one with the koala."
Another uphill battle was dealing with his region's infrastructure. Far from the Sao Paulo servers and with more traffic on the network than it could handle, koala's ping was over 200 during the day. Only at night, when everyone else was asleep, would his ping dip below 100, allowing him to play.
"I would wake up at midnight to play Counter-Strike for like six or seven hours," koala tells HLTV. "From Friday to Saturday and Saturday to Sunday, the days I didn't have school. My first years in CS were playing like this. For three years, I just played two days a week because it was when I could. I didn't sleep, or slept just for a few minutes or hours, to go back and play again."
During this period of time, in his early teens, koala would play somewhere in the range of 100 to 200 PUGs a month, and he went from level 9 to level 20 on GamersClub, the highest rank on the platform.
At 12 or 13, koala told himself that by 14, if he still didn't have anything in mind, like becoming a doctor or a lawyer, he would decide a path to follow. "The first CS tournament I watched was the one where Luminosity won," he says. "I didn't know about FalleN and Luminosity. I just watched something, and it was the MLG Columbus Major, so I had some luck, and said, 'Ah, maybe this will be my professional job.'"
When he turned 14, after reaching Challenger League and realizing that he had accomplished a lot as a Counter-Strike player during the past year, that was exactly his choice. "I would play CS, and that's it," he says. At the same time, koala was still contending with playing from Pará, just two nights a week, but he had made up his mind.
That's when he got a lucky break. His mother wanted him to attend a good school, and although he was more interested in pursuing his Counter-Strike career, he had the chance to move with his grandmother in Minas Gerais, putting him much closer to São Paulo.
"It was my mom's idea to send me to the south so that I could go to a good school," he says, "I didn't like the idea, but when I started to think about becoming a professional CS player, I said, 'Yeah, mom. I need to move. I want to move because I'm going to study,' or something like that."
koala made the move nearly 2,000 kilometers away from his mother and childhood friends as the COVID pandemic exploded, which provided him the perfect opportunity to spend his time playing Counter-Strike. That's when his mother caught on. "So that's why you changed your mind about leaving," she said to him. Busted.
"She was a bit angry sometimes, but in the end she gave up and rooted for me, and because of her I had gotten my PC and everything," he says of that give and take with his mother. "At the bottom of her heart she wanted me to do the things I want to do in my life, so I appreciate that very much."
koala's first recorded matches on HLTV start in 2021, with Ceará. Then there was a brief month at the beginning of 2022 in Elevate before the team that gave him the first big break of his career, FURIA Academy, came knocking.
It was with FURINHA that koala first traveled to Europe to play three WePlay Academy Leagues, which included a third-place finish at his first in Season 4, further legitimizing his dreams of becoming a professional Counter-Strike player in the eyes of those around him.
It wasn't all golden, however, as koala posted only a 0.91 rating during his time with FURIA's youth squad. "In some ways, it was the worst moment of my career," he recalls. "I didn't play the roles I played my entire life, so it was a difficult time, but it was a good time to evolve as a player." Outside of the server, his memories of playing for the most competitive organization in Brazil were fond.
koala is a classic Anchor/Lurker. "When I was in FURIA Academy, I was more of an entry or something like that," he recalls, "but since I started playing CS competitively, I was going into the Anchor and Lurker roles because I wanted to be the slower guy," he says.
"I don't like to rush or make sound," he adds with a laugh. "I'm a bit afraid." He remembers how he was reined in with one of his earlier teams. "I was like, 'OK, I'm going to lurk, but on CT side I'll go Outside on Nuke,' he remembers. "But they were like, 'No, you don't communicate enough. Just hold Ramp or B.'"
That's the case on Sharks (now known as DENDELE), too, where he came in to play some other positions, but ended up in his comfort zone. "It's my best way to play, so it's good," he says. "For me, it's a good place to be because I don't need to focus on other things that you need if you play other positions. It fits really well with my way of playing."
koala doesn't name any particular player as someone he aspires to be like, not even his countryman Kaike "KSCERATO" Cerato. "I don't have a Brazilian as a reference," he says, "but of course, if you say something about my positions, it's going to be ropz, or Jimpphat last year."
He watches all of the top players in his positions, though, and will focus on those who establish the meta. "So I'm on B Mirage, and I'll watch karrigan," he says. "It's not like, 'Let me know how to kill on B Mirage.' You want to know how to use your utility, so you'll watch these guys. I just watch everything that makes sense right now. One team has a 10-0 record on a map, so I'll watch how their lurker plays it because it's working."
koala has won five LANs in Brazil, four of them with Sharks, and has two second-place finishes at Fragadelphia events, as well as top-four finishes at Roman Imperium Cup, DraculaN, and Stake Ranked.
At one of the Brazilian LANs, CBCS Masters Xeque Mate 2025, he was named the tournament's MVP by Dust2 Brasil, and is becoming not only a top prospect, but a top rifler in the region.
All of this landed koala in the HLTV Prospects ranking when it was first launched in the fall season of 2025, a ranking he has consistently been leading for Brazil as the country's top up-and-comer. "Personally, for me to be on the list as the top Brazilian player is a good thing, you know? I prefer to be the best when I'm competing in something," he says. "The way I play and work for this, is to be the best. In my country, in my role in the game. So I'm happy about this."
In 2026, koala played his first Major at IEM Cologne, and he speaks nonchalantly about achieving such a feat. "I chose to become a Counter-Strike player because I thought that I should have the level to be here one day," he says. "Because someone who does what I did doesn't think that just qualifying for the Major is the top of their career. There will be something better, I think. Or at least, I hope."
The goal is not to qualify, but to win. Having showed locally that he has what it takes, koala has his eyes set on winning more prestigious events. "Brazil hadn't won any until like seven months ago when FURIA won IEM Chengdu," he says. "To be Brazilian right now, and win a Tier-S tournament, would be really special because it's really hard for us right now. But, of course, the biggest goal is the Major. Maybe in seven or eight years I can get that."
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João 'koala' Pfeffer
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