Ivan Vanko in Iron Man 2 is a brilliant but vengeful character. He has a grudge against the Stark family. His father worked with Howard Stark and was then cast aside. Ivan uses his own engineering skills to create the whips that can take on Iron Man. He is a formidable adversary who manages to give Iron Man a hard time in their battles.
The key element is his revenge. His father's situation with Howard Stark drives him to seek vengeance against the Starks. Also, his weapon creation, like the electrified whips, is important.
Ivan is probably the protagonist. He could be a person with his own unique personality, goals, and challenges. Maybe he is a child or a young adult. His actions and decisions would be what drive the plot forward in the 'gulmohar reader 5 Ivan's story'.
I'm sorry, but since I don't know the specific 'Ivan's story', I can't tell it in detail. Maybe Ivan is an ordinary person with his own unique experiences, like growing up in a small town, going to school, making friends, and facing various challenges in life.