The scriptures tell us that Judas, as the son of perdition, betrayed the Lord that the scriptures might be fulfilled / Jn 17:12. His life and betrayal fulfilled a prophesy that was made by David in Ps 41:9, and fulfilled in Jn 13:21-27, Mk 14:10. We know that the scriptures must be fulfilled / Mt 25:54, Mk 14:49, Lk 24:44.
The question that begs an answer is this, was it possible for Judas to have believed upon the Lord and been truly converted as the other disciples? All things are possible unto those believe / Mk 9:23. We know from the scriptures that God is not willing that any should perish / 2Pt 3:9.
Then you have some that get into predestination that some were appointed to hell and Judas is pointed to as an example and Jude 1:4 concerning those who were ordained to this condemnation as ungodly men. Jesus said this in Mk 14:21, ...but woe unto that man unto whom the son of man is betrayed, it would have been better for that man if he had never been born.
After all this we have to come to our own conclusions and convictions based upon the scriptures. Do we apply our conclusions to others, like a bad son, or a wicked ruler, or a serial killer or some reprobate that has no conscience or even a spouse that is abusive and out of control or devious?
I think it is safe to say what the scriptures have testified concerning Judas, the prophecy he fulfilled and that it would have been better that he had never been born and leave it at that.