Guardian - Someone you appoint to watch over your minor children (under 18) and any assets you leave for them until they turn 18. , Executor (or Will Agent) - Someone who follows the instructions in your Will, including handing out your assets, collecting any debts and paying any bills or taxes. , Beneficiary - Person (or people) who receives your stuff. For example, if you leave a car for your son in your Will, then he’s a beneficiary.