to get ulquirra you need to clear arcade mode with tousen kaname and ichimaru gin.
hope this helps you:)
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clear arcade mode with Tousen and Gin
finish arcade mode with that character to get his/her voice 2
im not sure but
Their is Bleach: Blade Batters and Bleach: Blade Battlers II both for the PS2 yet only released in Japan and are unlikely to be in English. Gamespot list 4 games and none appear to be English and all have only been released in japan. see related Gamespot link below answer information
one is a picture of zangetsu, shadings and all, ones a pentagon, and the last is a hexagon, at least what I know of. there are many more though.