1- He "comes back" from defeat/apparent death aprox. 7 times in the movie.
2- He is the leader of the Imperial Guards, but later becomes the new Ruler of Underworld (and starts to misbehave towards Aunty herself).
3- Likely, he was one of the main members of the gang of Marauders Aunty led before she would start to build a new civilization. Technically speaking, he's the last savage Marauder from the MM2 era still alive.
4- Abilities: quickness, strength, physical resistance and extreme temperature endurance.
5- His right foot is deformed: equine-shaped. That makes Ironbar a born "mutant" of some sort.
6- His weapons of choice: machete, slipknot, brass knuckle with pikes, crossbow, Imperial Musket.
7- He adopts his post-holocaust name from the kabuki mask pole he carries on his back. It is unknown if "Bassey" is his original pre-apocalypse civilian surname.
8- Sexuality uncertain. Maybe bisexual (some "hints": kissing Master's forehead; delicate care towards his own kabuki mask).
9- His fave sport is a sort of barbaric arm wrestling involving a panel filled with pikes placed above the contenders.
10- After having murdered someone, he blows on the pipe of the crossbow like it would be a gun, in a typical cowboy fashion.
11- The Buzzzzzz. He emits a very strange sound (resembling a "bee buzz") when struggling. See at the end of the Audition or during the postmodern arm wrestling sequence.
12- Through the entire movie, he just says 7 (very short) lines: "Maybe" (answer to Aunty when questioned about Max's ability to defeat MasterBlaster); "MasterBlaster, listen to the law" (signal to start the Thunderdome fight); "Kill him" (when Max refuses to kill Blaster); "No, Little Man. We've only just begun" (to Master, some seconds before killing Blaster); "Fix it" (to Master, when the Underworld energy machinery malfunctions); "Ahhh Pig-Killer" (before shooting Pig-Killer with a massive harpoon); "Come on now" (to the biker, during the final chase).
13- In the movie, he drives two vehicles (including the Hand Car) and mounts on the fighting platform of a Junkmobile.
14- He HATES Mad Max. He registered Max as potential *beep* ready to mess with civilization just as the warrior approached Bartertown's external entrance for the very first time. He attempted to kill Max during the Audition... twice!
He also managed to hit Max with a shovel, taking advantage of his cloudy left eye, right before the demise of Underworld.
15- In a 1988 interview, popular Aussie rockstar Angry Anderson kinda "confirmed" Bassey dies at the very end of the chase - but that's just his personal opinion!