If one were to ask the other gods of death on who is the most upright amongst them then would undoubtedly answer that it would be the God of Death Hades. If they were also asked if who carries the deadliest of grudges, then that would also be the God of Death Hades. All the other gods of death would never disrespect the God of Death Hades even if they were threatened.
Even the God of Death Ah Puch that has the same power level and same large death realm that is the same size as that of the God of Death Hades is very polite when it comes to the latter. Even Creepysoo knows of this information which is why he liked to work in the Death Realm Hades since other gods of death back off when they learn that information. There was even a rumor that the God of Death Hades locked another High God in Tartarus when he was disrespected.