Masenko

Gohan's signature move, he puts his hands above his head (one palm behind the other) to charge up ki, and puts them forward with the palms crossing to release a powerful energy beam. Gohan learned this move during his training with Piccolo prior to Vegeta and Nappa's arrival on Earth.

Gohan uses this move twice in the battle with the saiyans. Once as a retaliatory attack against Nappa after the giant killed Piccolo and the second time against Vegeta while he was stalling him to buy Kuririn time to hit him with Goku's genki dama.

Due to the name, it is likely that Piccolo created the move. He is shown using it on one occasion when confronting Freeza with Gohan and Kuririn shortly after the murder of Dende.

Non-manga usage
On the journey to Namek, Gohan uses it while on an orphans spaceship to push back an explosion and save a girl. When on false Namek, he uses it twice in a brief battle with a giant.

Piccolo uses it in the anime when he blasts Cell in the back to assist Gohan during their beam struggle. When Buu is battling against Vegetto, the kamikaze ghosts he creates are able to use this attack, though in the English dub, it is called Galic Gun instead.

There was also an instance in the anime where Gohan shouts out "Masenko!" when he actually fires a bakurikimaha at Freeza (after Freeza transforms into his third form and shoots Piccolo multiple times).

In Dragon Ball movie 8, Mirai Trunks is able to use this move in the fight against Broli, likely due to his being trained by Gohan.

Character meaning
魔 (Ma) = demon / evil / devil
閃 (Sen) = lightning
光 (Ko) = light
Note: 閃光(Senko) = fireflaught / flare / sparkle / spark of light


Kanji / Kana 魔閃光
Romaji：Masenko￣
Translated
Demon Light / Flash
English anime：Masenko / Masenko-Ha
English manga：Masenko
English Videogame(s)：Masenko
Creator：Piccolo
Other Users：Son Gohan / Future Trunks