[Brainchild]

I don't know why people are so quick to assign "mindless flailing" to Fourze. Sure, he was like that at the beginning of the show, but it eventually got to a point where he could come up with pretty effective switch combinations without needing Kengo to tell him what to do, such as in his final fight with Haru. While he needs Net in the end, the switches that he did use, Gyro and Gatling, Shield and Aero, and Scoop, all suggested that he was on his feet throughout the entire battle. Same thing with both of his battles with Aries, Kijima as the Horse, and so on and so forth. Plus, he came back from the dead and beat up Sagittarius without using the Fourze system. I'm not saying he's the ultimate rider or anything like that, I'm just sick of hearing that he's just a doofy brawler.

That said, I don't know who to vote for here. Shotaro seems like a more mature Gentaro, and Phillip is just kind of like Kengo but tagged on. And besides, they're probably the last two Riders who would fight each other.