I don't know if Klonoa has been on Nintendo consoles because I recall he was on the Playstation consoles. The last game I ever saw Klonoa from my memory was Namco X Capcom. If he was to get in Smash, they may use his VA from NxC.
Klonoa: Empire of Dreams for the GBA, and Klonoa for the Wii (which is just a remake of Door to Phantomile). There's also Dream Champ Tournament 2 and Densetsu no Star Medal for the GBA.
He also made cameos in Tales of Symphonia (Gamecube), Tales of Hearts (NDS) and Keroro RPG: Kishi to Musha to Densetsu no Kaizoku (also NDS). Klonoa as a possible NAMCO rep for Smash isn't too far off.
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