No Prep Time
Setting DBZ HELL
None of them are human so Alucard goes schrodinger and can't die.
Now between Father and Aizen it's a matter of if Father can deconstruct the Hogyoku, otherwise Aizen keeps reviving and becoming constantly stronger, considering that transmuting Aizen won't work when the Hogyoku would undo it. Father needs to be able to do something to the Hogyoku or he lacks the means to kill him.
Aizen could wittle down Father's philosopher's stone energy considering that Edward and co did it with conventional weapons pretty easily. Since Father has no concrete way of killing him or Alucard it really comes down to a draw between Alucard and Aizen and a dead Father in the middle.
Essentially, the battle comes to a draw between Aizen and Alucard since both lack the means to off one another with the former's immortality and the latter gaining Schrodinger's abilities. Father will pretty much have his souls whittled down by the two until he gets offed.
@CerusSerenade: how about getting sealed by kido? aizen can create hados that disrupt the flow of space and time and whats the best mindcontrolling resist alucard has done?
Schrodinger's powers allow him to exist anywhere he believes he exists. Schordinger himself was able to enter other people's minds to deliver a message this way, and even after Schrodinger had a shotgun inserted into his head and had it blown up he was back in a few moments to say "sup." Kido isn't stopping him.
As for mind control, Alucard has put individuals under his complete control where they would act and think just as he had instructed them to. Not that it matters, Aizen has no mind controlling abilities to speak of.
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