Japanese characters (off the top of my head):
Chimera Hybrid isnt Japanese, but still possible
..also Crash was big in Japan, but lets not get into that...
dont forget square enix or any JRPG such as etna. or kazuma from yakuza thats HUGE over there
Just read the article he said several
oh. but still. several can mean anything.
several generally means like 3-9 anything around there xD a couple means 2-3 about. But it could also be his "source" doesnt work for superbot and superbot kept some characters a secret, their website's source code did say 33 characters at one time, but they changed it so now it says 20 (probably because we saw that) but you never know