The Holy Spirit is a person in the Trinity distinct from God the Father and God the Son.
He has the attributes of personhood, performs the actions of persons, and has personal relationships.
He has insight (1 Corinthians 2:10-11).
He knows things, which requires an intellect (Romans 8:27).
He has a will (1 Corinthians 12:11).
He convicts of sin (John 16:8).
He performs miracles (Acts 8:39).
He guides (John 16:13).
He intercedes between persons (Romans 8:26).
He is to be obeyed (Acts 10:19-20).
He can be lied to (Acts 5:3), resisted (Acts 7:51), grieved (Ephesians 4:30), blasphemed (Matthew 12:31), even insulted (Hebrews 10:29).
He relates to the apostles (Acts 15:28) and to each member of the Trinity (John 16:14; Matthew 28:19; 2 Corinthians 13:14).
The personhood of the Holy Spirit is presented without question in the Bible as HE.