This especially stands out in contrast with his usual The Stoic behaviour when he suddenly starts screaming " That's mine!"
His Offscreen Moment of Awesome cements this. He's shown consistently kicking all kinds of ass, only suffering any real issues from the surprise attack at the start, taking on Furiosa while chained to Nux, and any time his PTSD kicks in at inopportune moments.
His first action sequence has him taking on an innumerable amount of Warboys and almost winning. Awesome Aussie: Though now played by an English guy.Angrish: Spouts some while strapped to Nux's car, the most famous of which is "Confucamus!".Ambiguous Disorder: Show signs of PTSD, and maybe schizophrenia (he's antisocial, hears voices, and has vivid and disturbing hallucinations.).Action Survivor: While not in a mentally sound state he survives being forced into a car crash by the War Boys, being strapped to the hood of a car during a high speed chase while his blood is being drained to sustained Nux, subsequently crashing in the middle of a colossal sandstorm and manages to subdue Furiosa in a fight while being chained to a (briefly) unconscious Nux and while she's being assisted by the other Wives.Exemplified when Rictus tries to physically pull the Wives out of the cabin. He also does plenty of ass-kicking in the tie-in comics and video game, when he brings Glory the Child out of the Sunken City. Action Dad: While not his biological kids, he does a lot of ass-kicking in the name of protecting the Five Wives, once he comes around to them.
This becomes a Chekhov's Gun when Max has to perform a transfusion for Furiosa. He is thus carried into battle by Nux, who is in need of an extended transfusion.