has he been described in any indian literary sources?
Yes, Vishnudharmottara Purana a hindu text.
Kubera
In the "Vishnudharmottara Purana", Kubera is described as the embodiment of both "Artha" ("wealth, prosperity, glory") and "Arthashastra"s, the treatises related to it—and his iconography mirrors it. Kubera's complexion is described as that of lotus leaves. He rides a man—the state personified, adorned in golden clothes and ornaments, symbolizing his wealth. His left eye is yellow. He wears an armour and a necklace down to his large belly. The "Vishnudharmottara Purana" further describes his face to be inclined to the left, sporting a beard and mustache, and with two small tusks protruding from the ends of his mouth, representing his powers to punish and to bestow favours. His wife Riddhi, representing the journey of life, is seated on his left lap, with her left hand on the back of Kubera and the right holding a "ratna-patra" (jewel-pot). Kubera should be four-armed, holding a "gada" (mace: symbol of "dandaniti"—administration of justice) and a "shakti" (power) in his left pair, and s
in mythology kubera the lord of when shared what relationship with ravana He was his demon half-brother. who is the former? Kuber or Kuberan, is the Lord of Wealth and the god-king of the semi-divine Yakshas in Hindu culture. does he have any other names? "Dik-pala", "Lokapala". what does the last one mean? A protector of the world. what religion is this protector associated with? Hindu, Buddhist. how has the protector been depicted in the former religion? In Hinduism, the guardians of the cardinal directions are called the Lokapalas, or Dikpalaka. and in the latter religion? Two broad categories of Dharmapāla (protectors of the Buddhist religion) -the other category being Wisdom Protectors. who were the parents of the original deity? "Prajapati" Pulastya and his wife Idavida. who was the father? He was one of the ten Prajapati or mind-born sons of Brahma. has any archeological remains been found regarding this son? UNANSWERABLE
wiki:8280556
Kubera [SEP] Iconography
Kubera is often depicted as a dwarf, with complexion of lotus leaves and a big belly. He is described as having three legs, only eight teeth, one eye, and being adorned with jewels. He is sometimes depicted riding a man. The description of deformities like the broken teeth, three legs, three heads and four arms appear only in the later "Puranic" texts. Kubera holds a mace, a pomegranate or a money bag in his hand. He may also carry a sheaf of jewels or a mongoose with him. In Tibet, the mongoose is considered a symbol of Kubera's victory over Nāgas—the guardians of treasures.