Klonoa is Namco's Mario. The games on the Playstation and Playstation 2 have 2D platforming gameplay within awesome 3D environments(2.5D game). He never got popular in the Western world because he's too cute and came at a time when we could only like a platforming game if it had some wacky or edgy character like Crash or Jak in it.
Any way if you have a Ps2 I highly recommend you get Klonoa 2, it's probably one of the best platformers you'll play.
Klonoa on Ps1:
The GBA games aren't half bad either:
So any Any Klonoa fans out there?