You can't force them to be Hades, but with some triggers from the SomeNewXTriggers pack you can automatically make it boot any non-Hades player. This may make them decide to be Hades.
Trigger_1
Active, Run Immediately
CONDITION:
----Player Major God----
-Player 2
-NOT checked
-Hades
EFFECTS:
----Send Chat----
-"{playername(2} has been kicked for not being Hades!"
----Set Player Defeated----
Player 2
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[This message has been edited by gummyWorm (edited 05-04-2005 @ 04:40 PM).]