Overwatch League: 2018–2023 On September 7, 2018,
Blizzard Entertainment announced that
OverActive Media (OAM) had purchased a slot for a Toronto-based franchise. On the same day,
Splyce announced that they would be working with OAM to form and operate the unnamed Toronto team, with OAM's Chris Overholt and Splyce's Marty Strenczewilk as the team owners. Former
CEO of the
Canadian Olympic Committee Chris Overholt was named the president and CEO of the franchise. "Who could have predicted what [esport] is and what this has become globally," Overholt said in an interview. "This thing is not set to explode, it's exploding and I think we're well positioned to take this on in Toronto and Canada." Lee "Bishop" Beom-joon was appointed as the team's first head coach after interviewing with the General Manager, Jaesun Won. Jaesun Won had come over as GM of the Toronto Defiant after being the North American Teams Manager and Assistant GM for Splyce. On October 24, 2018, OAM and Splyce officially revealed the branding, name, and staff of the team. General Manager Jaesun "Jae" Won and Head Coach "Bishop" would be joined by assistant coach Yun "Bubbly" Ho Cho, strategic coach Kim "Don" Dongwook, and analyst Dennis "Barroi" Matz. The team signed an all-Korean roster, composed of OWL players and experienced
Overwatch Contenders Korea players. Toronto Defiant's first regular season OWL match was a 3–2 victory against the
Houston Outlaws on February 15, 2019, in their
inaugural season. After posting a 5–2 record in
Stage 1, the Defiant qualified for the Stage 1 playoffs, but a 0–3 loss against the
Shock eliminated the team in the quarterfinals. Throughout the remainder of the season, Toronto gradually added more
Western players to their roster, such as the damage players Andreas "Logix" Berghmans and Liam "Mangachu" Campbell. The team failed to recreate the success they found in Stage 1, winning only three matches in their final four months of play. A 2–3 loss to the
Fusion on August 4 officially eliminated Toronto from postseason contention, and three days later, the team released head coach Bishop, leaving assistant coaches Optidox, Mobydik, and Barroi to lead the team in the final weeks of the regular season. Additionally, the team signed former
Paris Eternal coach Felix "Féfé" Münch as team's new head coach. After a 3–5 start to the
2020 season, head coach Féfé retired, with assistant coach David "Lilbow" Moschetto taking his place as interim head coach for the remainder of the season. The Defiant struggled to find much success for the remainder of the season, with the exception of a run during the North America
Summer Showdown tournament, in which Defiant made the semifinals. Toronto finished the season in 15th place overall with a 8–14 record, including bonus wins. The team advanced to the North America
play-in tournament, where they lost to the
Los Angeles Gladiators by a score of 2–3. In the offseason preceding the
2021 season, the Defiant again overhauled their roster, releasing all of their players, aside from Logix. The team signed former
Philadelphia Fusion head coach Kim "KDG" Dong-gun as their new head coach, who signed a mix of veterans and rookies to the team. In late May 2021, the Defiant had a
COVID-19 outbreak in its facility, sidelining both of their damage players, Logix and Jeong "Heesu" Hee-su. The team signed rookie Luka "Aspire" Rolovic on a 30-day contract as a replacement, but after his performance on the team, Toronto signed him to a full contract. The Defiant had a 6–6 record entering the final tournament cycle of the season, the
Countdown Cup. In the final week of the regular season, the Defiant defeated the
Paris Eternal to secure a spot in the West
play-in tournament. However, the team lost to the
San Francisco Shock in the play-in finals on September 5. Prior to the start of the
2022 season, Toronto dropped all of their players, aside from Heesu. The team signed several veterans, including former Shock support player Lee "Twilight" Ju-seok, former
Los Angeles Gladiators tank player Kim "MuZe" Young-hun, and former Fusion tank player Choi "HOTBA" Hong-joon. After a win 3–0 win over the
Boston Uprising, the Defiant qualified for the
2022 season playoffs and became one of five teams in the league that had qualified for every tournament in the season. Toronto finished the regular season with a 12–12 record and the seventh seed in the season playoffs. The Defiant lost to the
Houston Outlaws, 0–3, in the first round of the playoffs, dropping them to the lower bracket. They lost their following match to the
Hangzhou Spark, 2–3, ending their season.
Overwatch Champions Series: 2024 Following the end of the Overwatch League following the 2023 season, Activision-Blizzard would announce the
Overwatch Champions Series, a new esports circuit to replace it in 2024. On February 7, 2024, the Defiant announced that they would participate in the North America region of the OWCS, complete with a North American roster; the Defiant kept their branding as a result of their parent company OverActive Media being granted the branding from Activision-Blizzard following the end of the OWL. The team would win their first two splits in the OWCS in convincing fashion before finishing tied for 5th at the OWCS Major at
DreamHack Dallas, losing to eventual champions Crazy Raccoon in the upper bracket and then
ENCE in the lower bracket. On June 27, 2024, OverActive Media announced that the Defiant, who had qualified for the
Overwatch 2 tournament at the Esports World Cup via winning the FACEIT League NA Master tournament, would be playing under the
Toronto Ultra name for that tournament. The Toronto Ultra have historically been the name of OverActive Media's
Call of Duty League team. On December 12, 2024, OverActive Media CEO Adam Adamou announced that the organization would be "taking a break from Overwatch in 2025," and moreover, if they decided to return to competitive
Overwatch, the company would not compete under the Defiant branding. == Team identity ==