Th-om is the male servant, and he is often seen as a loyal and devoted servant who carries out his duties with diligence and care. He is also depicted as being somewhat simple-minded and not particularly intelligent, but he is kind and compassionate.
Ra-do is the female servant, and she is portrayed as being more cunning and intelligent than Th-om. She is also more ambitious and seeks to improve her position in the Whitbread household. Ra-do is often seen as being somewhat manipulative and scheming, but she is also loyal to the Whitbreads and takes care of them diligently.
Flush observes Th-om and Ra-do's interactions with the Whitbreads and other characters, and he uses their perspectives to gain insights into the human world. Through Th-om and Ra-do, Flush learns about the complexities of human relationships, social hierarchies, and the differences between the upper and lower classes.
Overall, Th-om and Ra-do act as foils to each other, representing different aspects of the human condition and providing Flush with a multifaceted view of the world he inhabits.