mixing possibility of some card type

[Toshiya_Reita]

hope i write a question at the right forum (but please warn me if its not allowed).

i just want to know, is there any possibility on mixing a machine and a fiend type monster? to make it could help each other on a duel. i need it it for my custom card.

[Northern Sage]

People really don't like fake types, if that is what you mean. You can always have the text "This card is also treated as..." and insert whatever other type you'd want.
If you mean for fusion summons, any mix of monsters is generally accepted.

[Toshiya_Reita]

umm...what i mean is mixing a machine and fiend type on a deck. not creating a new card type. i need to know if those type could assist each other on a duel or not. because my custom card need those 2 type as requirment.