Thomas J. Hanks is a proper noun and cannot be substituted with synonyms. However, the two separate parts of the name "Thomas" and "Hanks" can be replaced with synonyms. For example, "Thomas" could be replaced with other common male names such as "William," "John" or "Michael." Alternatively, "Hanks" could be substituted with other surnames such as "Smith," "Jones" or "Garcia." However, it is important to note that using synonyms for someone's name can cause confusion and misunderstandings, so it is best to use the actual name given.