Trainers of Dartrix have often had occassion to mourn their pokemon. Dartrix are a notoriously fragile species, noted for the ease with which defeats in pokemon battles turn fatal. Many trainers practice intensely with their Dartrix, hoping to delay their demise – but easy victories also encourage them to seek greater heights of competition. Worse, when they are inevitably defeated, elite Dartrix actually possess an even lower survival rate than their weaker peers. But their trainers mourning is soon interrupted, for within days of their death, a new pokemon will emerge from the corpse – a hooded pokemon who exceeds even Dartrix in the accuracy of its projectile attacks, but who can no longer fly, for its spirit is shackled to the earth.
Decidueye are proud pokemon, but ones who have often been described as vengeful killers, or even as sore losers. In the era when pokemon battled not for sport, but to hunt or wage war, Dartrix were notoriously difficult to kill without the use of subterfuge – and for this reason, Decidueye are noted for their habit of trapping their enemies in combat. But these traps are not truly necessary, for Decidueye's quills are narrow and accurate enough to fly into pokeballs and hit the pokemon within.
A Decidueye's spirit is bound to this world until it avenges its own death, and trainers in the modern era take care to remember the name of whoever defeated their Dartrix – so that their Decidueye may never face them again! But in the age of Alolan chiefdoms, a Dartrix's trainer might not even know who killed their pokemon, and wars did not permit the evasion of any particular enemies. Successful assassins of Dartrix, therefore, accepted nonfatal defeats in battle to remove their targets once and for all from the world of the living!
