When he was thought dead for awhile; his brother took over for him. In all honesty; once he got out of the hospital and back to work we have no idea which of the "Oxs" is actually being shown since I don't believe it's ever been specified since he returned. What's the general distinction between the two? Aside from being his twin, the second Ox has worse hair cuts and is even dumber. The original Ox was never a smart man but his brother goes from "thug/goon" lvl intelligence where the original was at to Savage Hulk speak.
Tears a dummy in half
Punches through a door
Charges through a stool bar
Tears out and lifts up a bar
Here he actually manages to keep Spider-Man in his grip, though Spider-Man had sprained his wrist before this
Punches through Maxi-Glass designed by Tony Stark
Ox's rush is so powerful it breaks a chain holding Daredevil