Short answers, pulled from the story.
Marcus Antonius was born on the 14th of January 83 BC into a family that seemed destined for mediocrity and scandal. His father, Marcus Antonius Creticus, was a man so incompetent and corrupt that the great orator Cicero claimed he was only given power because he was incapable of using or abusing it effectively.
As a tribune for 49 BC, Mark Antony used his veto power to protect Caesar from his political enemies and later commanded the left wing of Caesar's army at the Battle of Pharsalus on the 9th of August 48 BC. This battle marked the pinnacle of Caesar's power and effectively ended the Republic.
Mark Antony escaped Rome dressed as a slave after being waylaid at the door of the Theatre of Pompey and later seized the state treasury to present himself as Caesar's true successor. He presided over Caesar's funeral, reading his will and displaying the blood-stained toga to the crowd, which turned the assembly into a riot and forced many of the conspirators to flee Italy.
The Second Triumvirate was established in November 43 BC near Bononia to share military command of the republic's armies and provinces while avenging Caesar's death. The triumvirs issued proscriptions against their enemies in Rome, executed two thousand equites, purged one third of the senate, and defeated Brutus and Cassius at the battles of Philippi in 42 BC.
Mark Antony spent the winter of 41 BC with Cleopatra in Alexandria, where she bore him twin children in 40 BC and a third child in 36 BC. This period of luxury and Hellenistic rule won him the affection of the Greek peoples of the East but made him the target of Octavian's propaganda in Rome.
Mark Antony was defeated by Octavian's forces at the Battle of Actium in 31 BC and later died by suicide after being defeated again at the Battle of Alexandria. His death removed the last obstacle to Octavian's absolute power, ending the era of the Roman Republic and beginning the Roman Empire.