Megan Parker is one of the main characters from the TV show series Drake & Josh.
Megan is very smart but insensitive, sly and somewhat evil. She often shows hostile actions towards her older brothers, Drake Parker and Josh Nichols. She also taunts them with insulting names (such as boob) or even sometimes forcing them to do disgusting stuff. She once convinced Drake that he has a disease that has to be cured with lizard urine. Drake believed her and did carry out the procedure only to be told later that it had been one of Megan's pranks. Megan actually enjoyed getting to do those pranks to Drake and Josh and lie to her mother and stepfather very much.
She appears to have a large array of high-tech gadgets. Because of her villainous nature towards Drake and Josh, she is considered to be the primary antagonist of the series. The brothers always know what she's up to, but sometimes they realize it too late. The fact that she is quite young for someone of her level of cunning intelligence makes it nearly impossible for Drake and Josh to convince anyone about her pranks, which is a major running gag in the series.
She seems to have "sadistic personality disorder," as she says she likes to see Drake and Josh being tortured. Although she almost never admits it, she loves her brothers deep down. However, she can always blame them if anything wrong or bad happens to her. From the second season onwards, she calls her step-father by his first name "Walter," which is followed by Mr. Nichols by asking, "When did she start?" which then leads to someone interrupting him. In quite rare cases, Drake and Josh have the upper hand against Megan, which always backfires.
Megan also considers Nichols along with Drake cause Megan and Drake's mother is married to Josh's father, but they go by their last names Parker through out the series.
Megan Parker was portrayed by Miranda Cosgrove.