Robert Traylor, who played for the Bucks, Cavaliers, and Hornets between 1998-2005 was nicknamed Tractor Trailer for his wide body. History has recorded Traylor as 6'8" and 285 pounds but he may have been over 300 towards the end of his career.
There is a NBA player that goes by the nickname The Chairman of the Board and not The Chairman. The player is Moses Malone.
Artis Gilmore a former nba player got his nickname A-Train when he was with the Chicago Bulls.
Bonz is the nickname for NBA player Bonzi Wells. He was drafted into the NBA in 1998 and played basketball for the Portland Trail Blazers.