Sasuke would also be a strong contender. With his Sharingan, he can copy his opponents' moves and his Rinnegan gives him access to even more powerful abilities like Amenotejikara. His Chidori is a fast and deadly attack that could catch opponents off guard in the Smash Bros arena.
It's likely that Naruto himself could be very powerful. His ability to use chakra and perform powerful jutsus like the Rasengan and Sage Mode would give him an edge. He could also use his shadow clones to confuse opponents.
A practical answer is Chapter 251, because it turns the idea into a concrete scene. The chapter opens with If Du Qinglian was somewhat angry just a moment ago, now she was simply at..., adds pressure through Tens of thousands of viewers are being indecently assaulted by him!], and ends on The.
Chapter 234 is the strongest chapter-level answer because it starts from Given the vast mystical powers Jiang Li had displayed before, he was... and follows through on His voice, intermittent and broken, came through the earpiece: "Sorry, my....
Look to Chapter 265 for the clearest answer. It begins with As expected, the truth behind the video was unearthed one by one and..., keeps building through Meanwhile, Jiang Li and Zhao Lang's actions against the poachers garnered..., and lands on Miss Su, I also don't know why things turned out.
Look to Chapter 264 for the clearest answer. It begins with Jiang Li first reassured her mother, then opened the chat box with Shen..., keeps building through She had just sent a message when Shen Lan's video call came through., and lands on [Do your faces hurt, you rumormongers?.
If you want the clearest chapter reference, go to Chapter 234. Early on, Given the vast mystical powers Jiang Li had displayed before, he was...; later, the chapter leans on Master, what's wrong with me?" Jiang Li said, "I see that in your recent....
The best chapter pointer here is Chapter 226, "Live Fortune Telling!". It opens with What was all that before then? and closes on Are you sure you can be on the list of winners?] Zhou Xu: [?.
The best chapter pointer here is Chapter 233, "Individual, Ten, Hundred, Thousand... Million, Ten Million, Damn!!!". It opens with [What the hell, what's this about life span ending?? and closes on After all, a real big shot's birthdate wouldn't be so twisted, could the....
If you want the clearest chapter reference, go to Chapter 279. Early on, After getting a good scolding, Jiang Yan resigned himself to lying quietly...; later, the chapter leans on But he kept on muttering: "Right, right, right, you and Wen Jiaojiao are....
Look to Chapter 266 for the clearest answer. It begins with Upon hearing this, the deputy director's expression also turned serious., keeps building through Indeed, this matter is indeed tricky., and lands on Now I see why Jiang Li despises her brother so much, utterly unreliable!"....
Chapter 268 is the strongest chapter-level answer because it starts from To ensure the company's successful listing, Shen Lan even went so far as... and follows through on Jiang Li has nothing to do with Director Sun!" "Because she is my niece!"....