Black/Matrix AD

When the screen shows ''Goshujinsama wo erande kudasai'',
press X, Y, A, B, and press Start.

A guy named Zero should appear, but when selecting him.
He will say, ''Sorry.''

Therefore still cannot choose him.

Fake method: Hit X,Y,A,B,Start when the Japanese text ''Goshujin-sama wo erande kudasai'' appears. Zero will show up to the right of Prague, but only says ''Gomen ne'' when you try to select him.

Real method: Do 2 full rotations on the analog pad, then hit start when the Japanese text ''Goshujin-sama wo erande kudasai'' appears. Zero will show up to the right of Prague, and you actually get to select him this time.

Rotate the Analog-stick in two clockwise circles followed by Start when the Japanese text ''Goshujin-sama wo erande kudasai'' appears. Zero will appear on the character selection screen. Alternately, press X, Y, A, B, Start when the Japanese text ''Goshujinsama wo erande kudasai'' appears.