Gamma

In August 2009, he and CIMA participated in the annual Summer Adventure Tag League Tournament, but they performed very poorly, winning only one match out of eight and finishing in last place. However, they would win the Open the Twin Gate Titles on December 29, beating champions Shingo Takagi & YAMATO. Then, they strangely turned the belts in, declaring themselves to be only tentative champions, and announced their desire to face a strong team to determine the actual champions. On February 10, he and CIMA defeated Naruki Doi & Masato Yoshino to become the full champions. On March 22 they lost the titles to Shingo and Cyber Kong. On May 13, 2010, Gamma, CIMA and Genki Horiguchi defeated Don Fujii, Masaaki Mochizuki and Akebono to win the Open the Triangle Gate Championship. On October 25, 2010, Gamma, CIMA and Horiguchi lost the Open the Triangle Gate Championship to Naoki Tanisaki, Yasushi Kanda and Takuya Sugawara. On November 13, Gamma betrayed WARRIORS by revealing his partner as Naruki Doi for his upcoming Twin Gate championship match at Gate of Destiny, joining Doi's unnamed unit. On November 23, 2010, Gamma and Doi defeated K-ness and Susumu Yokosuka to win the Open the Twin Gate Championship. They would lose the title to Don Fujii and Masaaki Mochizuki on January 10, 2011. On January 14, 2011, Doi's unnamed unit aligned themselves with the WARRIORS stable, who turned heel in the process. On January 18 the new group was named Blood Warriors. On May 27, the rest of Blood Warriors turned on Gamma and gave his spot in the group to Kzy. Gamma then went on to join Masaaki Mochizuki's Junction Three stable. On June 18, Gamma, Masato Yoshino and YAMATO defeated the Blood Warriors team of CIMA, Naruki Doi and BxB Hulk to win the vacant Open the Triangle Gate Championship. They would go on to lose the title to the Blood Warriors team of Kzy, Naoki Tanisaki and Naruki Doi on September 2. On January 21, Gamma was pinned in a six-man "Loser Leaves Unit" match and was as a result forced to leave Junction Three. After aligning with Kaettekita Veteran-gun, Gamma and stablemates HUB and Magnitude Kishiwada won the Open the Triangle Championship on October 21. They lost the title to Masato Yoshino, Naruki Doi and Shachihoko BOY just a month later. On June 14, 2015, he, CIMA and Don Fujii defeated the Jimmyz (Ryo "Jimmy" Saito, Genki Horiguchi H.A.Gee.Mee!!, and Jimmy Susumu) to win the Open the Triangle Gate Championship. On October 8, Gamma formed a new unit with CIMA, Eita, El Lindaman, Punch Tominaga, and rookies Takehiro Yamamura and Kaito Ishida. On November 1, the unit was named Over Generation. The same day, he, CIMA, and Don Fujii defended the Open the Triangle Gate Championship against the Jimmyz (Jimmy Susumu, Jimmy K-Ness J.K.S., and Ryo "Jimmy" Saito), and vacated the titles afterwards.

Shortly after losing the Triangle Gate titles, he began to have problems with Yasushi Kanda. These problems escalated when Kanda began to misfire on protein powder attacks during their tag matches, blinding him instead of their opponents and costing them the matches. He even chastized Kanda to the point that Kanda told him that he would rather team with Cyber Kongcito than him. Eventually, a match was made - at the request of YAMATO - between him and Kanda for January 18, 2009, where the loser would be kicked out of Real Hazard. He got the victory, but then, Kenichiro Arai came out, seemingly to assist Kanda from a beatdown by him and the rest of Real Hazard. However, Arai attacked him, and then he, Kanda, and the other group members beat him down and booted him out of their ranks.

After he returned, he was no longer treated as a top line player, instead wrestling mainly in tag matches in the midcards. However, at the end of the year, he won the King of Gate Tournament, beating CIMA in the finals. The victory came by referee stoppage, after he low-blowed CIMA and rendered him unable to continue. Speculation still exists as to whether this was the intended finish to the match or not, but nevertheless, his victory won him the right to face CIMA for his Open the Dream Gate Title, which was set for February 3, 2008. CIMA defeated him, and in the process settled their long feud.

As September 2007 neared, he challenged the group's personal referee Kinta Tamaoka to a match on September 22 where the loser would be banished from Muscle Outlaw'z, after Tamaoka had cost the group several matches due to misaimed protein powder attacks. He lost the match when the whole stable surprisingly interfered on Tamaoka's behalf, so he left the stable and also seemingly left Dragon Gate when he had his contract annulled soon after. However, he would return a month later, saving Typhoon and New Hazard from a MO'z beatdown, and pledged his allegiance to Typhoon. It was all a ruse, as he immediately attacked CIMA and rejoined MO'z, and then he and the others members mobbed Tamaoka and kicked him out.

He turned up in Dragon Gate on March 19, 2006, being brought in by Magnitude Kishiwada (previously known as Big Boss MA-G-MA) to take over his position in Blood Generation while he recuperated from a severe shoulder injury. He and stable head CIMA took an instant dislike to each other, however, and he was soon kicked out of the faction. Naruki Doi, Masato Yoshino, and Naoki Tanisaki followed him, causing Blood Generation to split in two, with them on one side and CIMA, Don Fujii and Shingo Takagi on the other. On April 23, 2006, he and Doi beat CIMA and Fujii in a tag match to earn full rights to the Blood Generation name, but they immediately renounced it, instead forming the Muscle Outlaw'z faction. Though Naruki Doi was seen as the leader, Gamma was considered a co-leader or even the real leader. The split also marked the beginning of a long feud he would have with CIMA.

Sugamoto spent some years in the low card of Osaka Pro until finally breaking up in 2001, where he adopted the ring name of Gamma and the gimmick of a young punk. Turning heel, he joined Dick Togo's stable FLUXxx, whose leadership he inherited after Togo departed. Flanked by Big Boss MA-G-MA and Daio QUALLT, he achieved OPW's top heel status and feuded with Super Delfín and the rest of babyface wrestlers of the company. This lasted until 2003, when his henchmen betrayed him, kicked him out of the faction and renamed it Kishiwada Gurentai. Now as a face, Gamma allied himself with Delfín and his people and formed a tag team with Takehiro Murahama. However, a recurrent shoulder injury impeded him from recovering momentum, and in April 2005 he decided to leave the promotion.

Yoshito Sugamoto (菅本儀人 , Sugamoto Yoshito, born May 16, 1973 in Iwaki, Fukushima, Japan) is a Japanese professional wrestler, better known by the ring name Gamma (ガンマ , Ganma) . He is currently working for the Dragon Gate promotion.