What kind of character is Polonius in Act 1 to Act 2 Scene 1? with examples please.Shakespeare's Hamlet

A character who loves to spy and whose advice contradicts
his behavior, the pompous and hypocritical Polonius is part of the something that "is
rotten in Denmark."  Given to loquaciousness, Polonius lauches into a lengthy diatribe
to his son Laertes before his parting as he,ironically, advises him to be honest and
forthright,

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This above all: to thine own self be
true,
And it must follow, as the night the day,
Thou canst not then
be false to any man.
Farewell, my blessing season this in
thee!(1.3.78-82)

Then, when
he speaks to his daughter Ophelia, he cautions her against Hamlet and urges her to not
even be near him or speak to him,

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I would not, in plain terms, from this time forth

Have you so slander any moment leisure
As to give words or talk
with the Lord Hamlet.
Look to't, I charge you. Come your ways.
1.3.139-143)

However, at the
beginning of the next act, Scene 1, he calls his servant Reynaldo to go and spy on
Laertes in France and report on his conduct.

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You shall do marvellous wisely, good Reynaldo,

Before you visit him, to make inquire
Of his
behaviour.(2.1.3-5)

After
this, Ophelia enters to describe to her father the strange conduct of Hamlet.  Instead
of cautioning Ophelia again to stay away from Hamlet, Polonius suggests to her that they
inform the king.  He later informs Claudius and Gertrude that their son is mad. He
arranges for Claudius and himself to spy on a meeting between Hamlet and Ophelia which
he will arrange.  Thus, with both his children, he contradicts the advice which he has
given them, proving himself a hypocrite and a spy.