Option list generated though 2 relations and a dependent variable

So I was modifying some code recently to generate an option list based on alias groups and a dependent field. I managed to accomplish this functionality but it works by displaying the persons username. There is a table that contains both username and full name, but I've been unsuccessful at utilizing it to convert the usernames generated into the list to their real name counterpart.

Tables:

ASSET

  - AssetName

  - AliasGroupName

ALIASUSER

   - dAlias (same as AliasGroupName in ASSET)

   - dUserName

USER

   - dName (same as username for ALIASUSER)

   - dFullName

My current setup is having the option list field populated with a view based on the ALIASUSER table.