wether dasas were monsters or they were evil of a man in vedas specially rig-veda.
Some verses may show them living beings
अकर्मा दस्युरभि नो अमन्तुरन्यव्रतो अमानुषः । त्वं तस्यामित्रहन्वध र्दास स्य दम्भय ॥८॥
The Dasyu practising no religious rites, not knowing us thoroughly, following other observances, obeying no human laws, Baffle, destroyer of enemies [Indra], the weapon of that Dasa .
– Translated by H. H. Wilson
— Rigveda 10.22.8
while some as demons
स इ द्दासं तुवीरवं पतिर्दन्षळक्षं त्रिशीर्षाणं दमन्यत् । अस्य त्रितो न्वोजसा वृधानो विपा वराहमयोअग्रया हन् ॥ ६॥
The sovereign Indra attacking him overcame the loud shouting, six eyed, three headed Dasa , Trita invigorated by his strength, smote the cloud with his iron-tipped finger.
— Rigveda 10.99.6, translated by H. H. Wilson
some describe it as evil of a man
4 Agni shone bright when born, with light killing the Dasyus and the dark: He found the Kine, the Floods, the Sun.
—Rigveda 5.14.4
Dasa is also used in Vedic literature, in some contexts, to refer to "servants", a few translate this as "slaves", but the verses do not describe how the Vedic society treats or mistreats the servants.
—https://en.m.wikipedia.org/wiki/Dasa
So my question is whether the title dasa in rigveda is multiused or is it evil of a man. please use only vedic verses to explain.(Try to eleborate more about them)