Here is the Hulk as your office manager.  She's not supposed to wear denim to the office, but she totally does it all the time, and nobody's going to say anything to her.  She's four months pregnant, and Oh God, the hormones... you never know what's going to make her snap.  Besides, she's been here a long time, and nobody else would be able to do her job if she left.  Why would she file the requisition forms under "N" for "Neediness?"
Here is Supergirl as your office receptionist.  I think she got the job because her cousin pulled some strings.  What, you need those reports faxed yesterday?  She'll go fetch those from your mailbox and send them right now.  Whoosh!  Off she goes!
This is what Wonder Woman would look like if she were your boss.  And she would not be happy that you're requesting extra vacation days.