|Debut||December 16, 2018|
In October 2018, Kotaro Suzuki started feuding with RATEL'S, he would be joined by Yoshinari Ogawa. On October 30, Suzuki defeated RATEL'S leader Daisuke Harada to win GHC Junior Heavyweight Championship. Harada would demand a rematch, but Suzuki would only grant it, under the stipulation that of Harada lost RATEL'S would be forced to disband. On December 16 at Great Voyage in Yokohama vol.2, Suzuki lost the title to Harada. After the match, YO-HEY turned on RATEL'S siding with Suzuki and Ogawa. The three dubbed themselves as "Stinger". On February 1, 2019, Stinger would be joined by another RATEL'S member HAYATA, who turned on RALTEL'S. On February 24, Ogawa and Suzuki defeated Hajime Ohara and Hitoshi Kumano to win the GHC Junior Heavyweight Tag Team Championship. After the match, HAYATA turned on Stinger and rejoined RATEL'S. HAYATA along with Tadasuke challenged Ogawa and Suzuki to a title match. On March 10, Ogawa and Suzuki successfully defended the GHC Junior Heavyweight Tag Team Championship against HAYATA and Tadasuke. Shortly after, Ogawa began offering Harada a handshake either before or after their matches, and Harada did once shake his hand. Tadasuke tried to stop him. After the third handshake, Harada attacked Ogawa. YO-HEY would later be hospitalized after suffering a collapsed lung, with HAYATA visiting YO-HEY in the hospital. YO-HEY would later announce he wanted to team with HAYATA to win their third consecutive Global Junior Heavyweight Tag League. On May 19, Stinger turned on YO-HEY, due to YO-HEY indirectly declaring war on them. Afterwards, YO-HEY would be saved by RATEL'S. From May to June, Ogawa and Suzuki took part of the 2019 Global Junior Heavyweight Tag League, finishing the tournament with a record of six wins, one loss, and one draw, advancing to the finals of the tournament. On June 9 Ogawa and Suzuki defeated HAYATA and YO-HEY to win the tournament. Afterwards, in a post-match interview, Chris Ridgeway was announced as the newest member of the stable. From June until July, all members of Stinger took part in the 2019 Global Junior League with Ogawa wrestling in block A, while Suzuki and Ridgeway wrestled in block B. All three failed to advance from their blocks with Suzuki and Ogawa finishing second in their respective blocks, while Ridgeway finished third. Suzuki had a chance to the advance to the finals, but lost to HAYATA in a decision match, to decide who was going to advance from their block.