"Frank Cooper" is a proper noun and cannot be replaced by synonyms. However, if we look at the individual words, "frank" can mean straightforward, honest, or candid, while "Cooper" is a surname. Synonyms for "frank" might include sincere, direct, or open. As for "Cooper," alternatives could be any other surname or last name. It is worth noting that while synonyms can be useful in varying the vocabulary in our writing, they should be used appropriately and not forced.