if by neutral Pokemon you mean no gender like Beldum you can breed it with a ditto.
Put a starter with a ditto in the Pokemon daycare and wait for an egg hatch it to get the baby starter.
no such thing
Get one starter, make an egg of it, then trade it to your friends
keep it in your party, make a fire Pokemon as the leader so it will take less time to hatch
Egg.
No.
a regi cannot have a egg in any Pokemon game because they are nongendered
yes tou can
yes
yes
Wynaut
No, because Rayquaza can't breed. None of the legendary Pokemon in the game can breed at all.