Mad bonkio user is an Australian bonk.io player and map creator. He had two Hot List hits including the #3 hit, Epic Arena II, and the #5 hit, Epic Arena I. He also published the successful Speed Optimization I, a speedrun map. In total, his maps have received over 7.5k upvotes.
He has stated that he rarely makes maps nowadays, due to being more focused on the wikia, as well as the unreliability of the Australian bonk servers. His in-game skin is an approximation of the Southern Cross using Bonk's 5-pointed star shape.
In May 2019, Epic Arena I was chosen to be one of the maps in the Community Picks.
Outside of the game, Mad bonkio user is an Admin on the Bonk.io Wikia, as well as an active member of BCD.
In early 2020, Mad bonkio user began playing the Bonk 2 beta occasionally and was amused to find that his map Epic Arena I had become one of the most popular and controversial maps in the game.