These two men are Gloria Pritchett's brothers.
In "Caught In The Act", Gloria told Phil that she was sending an e-mail to one of them in Colombia on Claire's computer, but was actually trying to delete an accidental message that she sent to Claire.
In "Won't You Be Our Neighbor", when Gloria tried to settle an argument between Jay and his biggest business rival, she said that she was going to handle it how her mother handled Gloria's brothers.