To deny "Personality" to the Holy Spirit, lands you into a confrontation with the Word of God, which clearly teaches that the Holy Spirit is a Person, just like the Father and Jesus Christ are.
Firstly, to speak of "personality", we mean, "consisting of intelligence and will", which sets humans apart from the animal kingdom. This is what is meant when the Bible says that we are made in "God's Image". It has nothing to do with the "outward appearance", but that we have "intelligence and will", as rational beings, as God is.
When Jesus speaks of the Holy Spirit in John's Gospel, He says that the Spirit is, "another comforter". The Greek here is much better, "ἄλλον παράκλητον", which is in the masculine gender. Strictly speaking, for grammatical gender agreement in the Greek, we have "Spirit" in the Greek, "πνεῦμα", which is neuter in gender. Jesus would have used the neuter, if the Holy Spirit were "impersonal". Also, we have "another", where "ἄλλον", is used for "another like Jesus". Since Jesus is a Person, and the Holy Spirit we continuing His Ministry, He is also a Person. This is confirmed when Jesus also refers to the Holy Spirit as "He", the Greek being, "ἐκεῖνος", which is the masculine. Again, if Jesus were speaking of just "another power", (impersonal) continuing His work, then he would have according to the correct Greek grammar, used, "ἐκεῖνο", which is in the neuter gender, and would agree with "πνεῦμα", in gender agreement. It is because the Holy Spirit is also a Person, like Jesus, He uses the masculine. Another factor is, that since Jesus Speaks of the Holy Spirit in John chapter 16, of continuing His work, and He is "ἄλλον παράκλητον", this very clearly means that the Holy Spirit is NOT the same Person as Jesus Christ, as the grammar very clearly distinguishes them. Jesus says that when He goes, then the Holy Spirit will only come. Read John chapter 16:1-15, where it is very clear, that Jesus Christ and the Holy Spirit are not one and the same Person.
If, as you say the Holy Spirit is not a "Person", then how can you account for the fact, that He has Personal qualities? The Holy Spirit, "creates", can be "grieved", "sends", "commissions", "teaches", "directs", etc, etc, all of which only a Person can do.
I have already shown that from passages like Matthew 28:19, the Father, Son and Holy Spirit cannot be the same Person, the Greek grammar is very precise here, and leaves no room for any doubt.