Are species AUs allowed?
Yes, you may use a MYO ticket to make a Fantochi version of a character already established in another closed species. The reverse is also fine: You can make your Fantochi part of another closed species as an AU. Make sure to ask for permission from the original CS's owner though.
Do twins count as one or two Fantochis?
They count as two Fantochis, no exceptions.
How do I send a MYO for approval?
Please read this page!
Can Fantochis have the same gemstone(s)?
Yes! There are only so many gems in the world, it would greatly limit creativity if we only allowed one Fantochi to have one gem, would it?
Would a 5-core Type C Fantochi still look humanoid?
Yes, although that would definitively make them very unstable, hoho…