Rhyperior is a 4th generation Pokemon and therefore yo are not able to attain this in fire red. Diamond and Pearl however do have Rhyperior.
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No
You cannot get Rhyperior in Pokemon emerald as he is only in Pokemon diamond and pearl.
U Cant
In Pokemon firered you can't, but in Pokemon leafgreen you can get it then trade it to Pokemon firered.
bertha at the Pokemon legue has it