Pokken Tournament, the Tekken-inspired Pokemon fighting game, hit arcades last year. It's scheduled to arrive on Wii U in early 2016, but it also turns out that the arcade-style controller for the game's coin-op version will be available for purchase as well. The controller will apparently be part of the Japan-only Wii U bundle, but Amazon has the pad up for preorder in America, at a very reasonable $25.
The controller is manufactured by Hori, a Japanese hardware company who are renowned for their excellent built quality.