"Gohan, Show No Mercy! Showdown with Universe 10!!" (悟飯よ非情なれ！第10宇宙との決戦!! Gohan yo hijōnare! Dai ju uchu to no kessen!!) is the one hundred and third episode of Dragon Ball Super. Its Japanese air date is August 13, 2017.
Ribrianne and Android 17 fiercely attack each other, while Rozie begins to overwhelm Goku's defenses. She surrounds him with ki balls and attempts to blow him up, but No. 17 protects him with a barrier. Goku, who has studied Rozie's techniques, hits her with a powerful ki blast. As he and No. 17 corner Rozie and Ribrianne, Jimeze arrives and rescues them with Instant Transmission. Elsewhere, Botamo challenges Gohan on Champa's orders. As Piccolo and Goku observe, Gohan attacks with a flurry of blows, which apparently have no effect. However, Gohan's attacks begin to lift Botamo off the ground and renders him unable to defend himself, allowing Gohan to knock him off the stage. Universe 10's Obuni and Rubalt appear to challenge Gohan and Piccolo. Jimeze defeats Universe 10's Jilcol. With 8 warriors eliminated, Gowasu accepts his imminent demise, while Rumsshi remains defiant. Obuni shifts his ki away from his body to render himself impossible to detect and wounds Gohan. Rubalt initially has the upper hand against Piccolo, but Piccolo uses his Hellzone Grenade to knock out Rubalt, leaving Universe 10 with only Obuni. Obuni begins to overwhelm Gohan, which makes Gowasu want to cling to life again. Gohan powers up to his Potential Unleashed and powers through one of Obuni's punches. He counterattacks Obuni's moves by locating and hitting Obuni after he gets hit. Obuni pauses the fight to show his respect for Gohan, but refuses to lose for the sake of Universe 10. Gohan battles and defeats Obuni with a Kamehameha. All of Universe 10's fighters have been eliminated. Right before Universe 10 is annihilated, Gohan discovers a locket containing a picture of Obuni and his wife and child. Gohan and Universe 10's angel, Cus, mourn Universe 10's destruction.
- Android 17 vs. Brianne de Chateau (Ribrianne)
- Goku vs. Su Roas (Rozie)
- Gohan vs. Botamo
- Jimeze vs. Jilcol
- Gohan (Base/Potential Unleashed) vs. Obuni
- Piccolo vs. Rubalt
- This marks the first time Piccolo uses the Hellzone Grenade in many years, since his battle with Android 17 during the Imperfect Cell Saga.
- The episode showed Obuni's family at the end, and coincidentally, the episode's original air date was on tradition of Brazil and Samoa.
- Script - Yoshifumi Fukushima
- Storyboard - Takeshi Mori
- Episode Director - Hideki Hiroshima
- Animation Supervisor - Naoki Tate & Yasuhiro Namatame
- Key Animators - Naoki Tate, Futoshi Higashide, Yasuhiro Namatame, Tomokazu Gunji, Tetsuya Saeki, Yukihiro Kitano, Yoshikata Kato, Tatsuhiro Nagaki, Reiko Saito, Mika Hironaka, Shuntaro Mura
- 2nd Key Animators - Miyuki Yokoyama, Yong-ce Tu, A-Line, Toei Phils.