How does the character Marc Antony change during Julius Caesar?Be detailed please

During Caesar's assassination the reader does not really
know much about the character of Marc Antony. We simply know that he is the "right-hand
man" of Julius Caesar and that he, as far as we know, is true and honorable to Julius
Caesar. Furthermore, some of the other characters make reference to Anonty as being a
party boy. When the conspirators are plotting the assassination, Brutus and a couple
others say they should not kill him because he is nothing without Caesar and pretty much
say Antony cares too much about having a good time to get too worked
up.

However, once Caear is assassinated we see a new side
of him. He is manipulative. He is clever and cunning. He tricks Brutus into letting him
speak at Caesar's funeral where he proves himself to be very persusive; he has the
abilty to "stir men's blood."

But yet again at the
beginning of Acts 4 and 5 we see a new side of him. At the beginning at the Act 4, he is
planning with Octavius and Lepidus to try to take the money that Caesar left the Roman
citizens. Here we see him being very greedy.

Finally at the
beginning of Act 5 we see him trying to act   should be the man in charge, not Octavius.
He was Caesar's right hand man after all. Even though Octavius clearly overtakes him, we
here see Antony being a bit power hungry.