Who assisted Bezalel in the tabernacle construction?

Answer: Oholiab

God appointed Oholiab son of Ahisamach, of the tribe of Dan, as Bezalel's assistant.

“Moreover, I have selected Oholiab son of Ahisamach, of the tribe of Dan, as his assistant. I have also given skill to all the craftsmen, that they may fashion all that I have commanded you:”— Exodus 31:6 (BSB)