This one is confusing

[JmOz]

If a character has Multiform, and one form has Duplication with "Can not recombind", is he automaticaly duplicated when he changes to that form?

So if Mythic can transform into a number of mythical creatures, when he transforms into Hydra, does he already have multiple heads (assuming you are using the sample power from Fred)?

[Steve Long]

Generally, yes, he'd already be Duplicated. As always, the GM can change that outcome if it doesn't make sense or causes game balance problems.