This thing is pretty easy to beat.
It couldn't get (at first):
Fassad (Mother 3)
Ionia (Mother 3)
Starman (Mother)
Starman Jr. (Mother)
Gregory House (whut?! how does it not get that)
Duster (Mother 3)
Waddle Dee (Kirby)
Sir Kibble (Kirby)
etc.
There's a lot more, I just can't remember anymore of them. The problem with this is that hypothetically, it can be wrong about every character theoretically, because it lacks a defined order of questions. Before it asks if your character is real, it asks if you know the character, if the character lives with you, if you're in love with the character, etc. It's a waste of questions. Each game should start with "Are you female?", then "Are you fictional?", and work your way, way way down to "Are you Brazilian?" and "Am I too stupid to guess your character?".