first lets talk about bill cipher he is the main villan in gravity falls and plans to take over the entire world he is a demon that plans to take over the entire world he can enter into weridmageodn and turn into a giant monster and he cannot be killed but you can destory the books and him as well and illuanat has a powerful attack the all seeing eye it knows your moves fears weakness and skills in my opion i think bill cipher will win.

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