Mudguts was known for being one of the most psychotic and uncontrollable members of Toecutter's motorcycle gang. He was seen licking the face of a mannequin, spitting at May Swaisey, and generally being a lunatic.
However, at times it is shown that he could be quite calculating and task-oriented, especially when it comes to taking charge. When Johnny the Boy was run off the road in the scene where Max was chasing down members of Toecutter's motorcycle gang, Mudguts urges his fellow bikers to keep riding and not stop for him. It seems he has close relationship with Cundalini, and is seen dancing with and groping him on numerous occasions. However, the extent to how platonic their relationship is can be questioned.
His dark complexion is a clear sign of his Italian heritage as a lower-class criminal.
His boots resembled those of Goose's, indicating that many of his clothing possessions may have been stolen from the MFP's stock.
Mudguts took part in one notable vehicular heist with his other gang members. In a calculative and stealthy operation, he managed to steal a large amount of of petrol from a fuel tanker for Toecutter. His role in the theft was to vault unto the tanker and secure its payload. In the final chase between Max Rockatansky and Toecutter's gang, Mudguts is ran off of the bridge into the water along with Clunk. His fate is left uncertain, though it is possible he survived.