Here's a solution to emulate this control better... : r/DolphinEmulator
Because we cannot provide direct links, here are the search parameters. Use a trusted ROM site (Internet Archive is a safe bet) and search for: ben 10 omniverse game download for android dolphin emulator
Downloading a game you do not own a physical copy of is piracy. Ethically and legally, you should rip the ISO from your own Ben 10 Omniverse Wii disc using a Wii console or a compatible PC disc drive. There are plenty of guides online on how to dump Wii games. Here's a solution to emulate this control better