The Bible does not say much about Balaam other than he was the son of Beor at Pethor (of Mesopotamia - Deut 23:4), which is near the River in the land of the sons of his people (Num 22:5). It appears that Balaam was known among the people of the land (i.e., Moabites and Madianites) and has a reputation of able to effectively bless or curse people.
Other things that the Bible says about Balaam, to wit: 1. Balaam knows the Name of the Most High (Num 23:3) 2. The L-RD met with Balaam at least 4 times (Num 22:9, 20; 23:4, 16) 3. The Angel of the L-RD met with Balaam (Num 22:22-35) 4. The L-RD gave Balaam instructions (Num 22:12, 20; 23:16) 5. The Ruach Hakodesh came upon Balaam (Num 24:2)
Woe unto them! for they have gone in the way of Cain, and ran greedily after the error of Balaam for reward, and perished in the gainsaying of Core.