Bikkuriman Kids: Theme Fighter Nyander  

ビックリマンキッズ　テーマファイターニャンダー

The show you're referring to is called "Bikkurimans." It's an animated series that was created as part of a marketing campaign for a new brand of chocolate candies. While the anime does feature characters from this universe, it doesn't include any direct references or product placement for the candy line itself.