But,Oscorp is secretly developing the OZ Serum. A serum that will make superhuman. Oscorp has developed many kind of this serum. Including Extremis,etc.
Norman Osborn's real name is Norman Virgil Osborn.His father Amberson Osborn and son Harry Osborn has not appeared in LEGO Marvel Super Heroes.
When Norman Osborn is the Green Goblin.He's killed by Spider-Man.But that part didn't occur in the game.