Isles LoL: Career, Champions and Worlds 2026

Isles is the Australian support for LYON in the LCS. Born Jonah Rosario on 7 March 2001, he won four Oceanic Pro League titles in 2020 before moving to North America, where he has played for Cloud9, Dignitas and now LYON. In 2026 he is best known for a deep enchanter pool led by Lulu and Milio, backed by the engage supports he built his career on.

His job on this roster is less about making plays himself and more about keeping LYON’s carries alive and their fights clean.

2026 is a turnaround year for Isles. He has played far more games than in 2025, and LYON are winning most of them, after a 2025 season that ended 10–29 with a 25.6% win rate. Almost every survival stat moved the right way: he dies less per game, collects more assists, and his KDA is far higher than it was a year ago.

The more interesting shift is in how he spends his time. His share of the team’s damage and his kill participation are both a touch lower than last season, while his vision per minute is up. That is the profile of a support on a winning team: fights are being won before he needs to add damage, so his resources go into wards, setup and keeping the carry alive rather than trading.

For a support player in solo queue, the lesson is the same one his numbers teach. On enchanters, staying alive and keeping your carry topped up wins more games than chasing kill participation, and a death you avoid is worth more than an assist you add.

Lulu is the center of his 2026 pool. She is his most played champion this year and one of his best results on a real sample, with Milio close behind as the second enchanter he trusts in any draft. Both picks say the same thing about how he wants games to go: protect one carry, survive the first engage, and win the long fight.

Alistar is the engage pick that has held up, with a winning record and a steady presence through the summer playoffs. Nautilus is the exception. It is his second most played champion of the season but has a losing record, which makes it the clearest soft spot in the pool; he takes it for lane control and hook threat, and it has not been converting as well as his enchanters.

Further down sit the picks that worked on smaller samples. Bard and Neeko both have winning records over more than a handful of games, though neither has been played since July, and Seraphine and Nami round out the enchanter side. Camille is a pocket pick he has not lost on, but on so few games it says more about draft surprise than about strength.

Karma, Rakan, Rell, Renata Glasc, Shen and Poppy fill the middle of the list. Overall the pool is wider than in 2025, which matters in a best-of-five: opponents cannot ban him out of his comfort zone, because he has an answer on both the enchanter and engage sides.

Across his career, the signature champions are Nautilus, Rakan, Alistar, Karma and Leona, with Nautilus his most played champion overall, so the 2026 lean toward Lulu and Milio is a real change of style rather than a continuation of it.

His Lulu build runs Summon Aery from Sorcery with Inspiration as the secondary tree, and an item path built from Shurelya’s Battlesong, Mikael’s Blessing and Ardent Censer. Shurelya’s gives his team speed to start or escape a fight, Mikael’s is his answer to crowd control on the carry, and Ardent Censer rewards an auto-attacking teammate. It is a build for playing around one carry, not for poking.

Milio follows the same logic. Echoes of Helia appears in every Milio build, with Staff of Flowing Water as the usual partner, and the rune page mirrors his Lulu page with Summon Aery and Inspiration. On Nautilus he switches to Aftershock in Resolve and always builds Locket of the Iron Solari, often with Knight’s Vow; that is a frontline that protects his team after the hook lands, not a roaming playmaker.

Two choices run through all three champions: Flash and Heal as Summoner spells, and an Inspiration secondary with Magical Footwear and Cosmic Insight. Heal over Exhaust or Ignite is a sustain-first, team-first choice that lines up with everything else he buys.

His latest games come from the LCS 2026 Summer Playoffs, in series against Shopify Rebellion, Cloud9 and Team Liquid. The drafts pulled him across almost his whole pool: Alistar is the pick he returned to most, with Rakan, Karma, Lulu, Nautilus, Renata Glasc, Milio and Seraphine all appearing in the same run.

That spread is the practical value of his wide pool. In long playoff series, LYON could flex between engage and enchanter bot lanes game to game, and every one of these games has a VOD you can open from the table.

Watch his best Lulu, Nautilus and Milio games below; they are the clearest place to study the protect-the-carry style his builds point to.

Isles started in Oceania. His first listed team is Avant Gaming, from 7 June 2019 to 17 August 2019, followed by Legacy Esports from 31 January 2020 to 28 August 2020, the year that produced every title on his record.

He moved to North America with Cloud9 for a short stint from 14 January 2022 to 24 April 2022, and joined Dignitas on 20 January 2024. He now plays for LYON, the organization he represents at Worlds 2026.

The arc is not a straight line. The 2025 season was the low point, with a 10–29 record, and 2026 is the recovery: a far busier schedule, a winning record and a place at the World Championship.

Every title on his record comes from the OPL in 2020, during his Legacy Esports year: first place in Split 1 and the Split 1 Playoffs, then first place in Split 2 and the Split 2 Playoffs, the last on 28 August 2020. Winning both the regular season and the playoffs in both splits means his team finished on top at every checkpoint of that year.

Those OPL titles remain his only first-place finishes on record, and the list holds no LCS title yet. His standing in North America rests instead on the 2026 turnaround and the Worlds qualification that came with it.

Isles is at Worlds 2026 with LYON, who qualified as North America #2. LYON go straight into the Main Event and start in the Swiss stage on 23 October 2026, with the Knockouts to follow for the teams that advance. Follow every stage on the Worlds 2026 hub, and find the rest of our pro coverage in the esports section.