with Helena as soon as he wakes up. But the main point here is not the comedy of errors that ensues from all this sprinkling, but the devious and manipulative attitude behind it.

Oberon, as King of the Fairies, thinks he has the right to play around with other people's emotions, to treat them like pawns in a game of chess that he's playing with his queen, Titania. There's something decidedly unpleasant in all of this, not to say nasty.

In a Midsummer Night's Dream, Oberon is the King of the fairies, who is able to disguise himself as a human being. In some ways he bridges the world of humans and the fairy world.

Oberon's Personality Traits

• Jealous husband/lover

When he first appears in the play in Act II, Oberon, who is married to Titiana, engages in a love quarrel with her much like that of human beings as they resurrect old infidelities. When he first sees his wife, Titiana declares that she will no longer share her bed with him. 

TITA. What, jealous Oberon?—Fairies, skip hence.

I have forsworn his bed and company. 

OBE. Tarry, rash wanton, am I not thy lord? (2.1.47-49)

streak[ing] her eyes" with magic juice "and make her full of hateful fantasies" (2.1.257-58). 

But with thy brawls thou hast disturbed our sport.
Therefore the winds, piping to us in vain,
As in revenge, have sucked up from the sea
Contagious fogs, which falling in the land
Have every pelting river made so proud
That they have overborne their continents. (2.1.72-77)

But first I will release the fairy queen.
Be as thou wast wont to be;
See as thou wast wont to see:....
Now, my Titania; wake you, my sweet queen. (4.1.55-58)

Titania describes Oberon as "jealous," and as an argumentative "brawl[er]" whose fights with her disturb the fairy dances and the weather, raising up winds and fogs:

with thy brawls thou hast disturbed our sport.
Therefore the winds, piping to us in vain,
As in revenge, have sucked up from the sea
Contagious fogs

all their elves for fear
Creep into acorn-cups and hide them there.

Oberon is the King of the Fairies and lives outside the Athens world created by Shakespeare.  You should know that Shakespeare gave this play's city scenes a classical Greek setting and drew on classical source material, but its characters are drawn from a purely Elizabethan time and place.

Although Shakespeare changed some of the common assumptions about Fairies (and the society of his day did, for the most part, believe that faires were actual real beings), he draws heavily on the beliefs of his day.  I suspect that, though they saw the world as being influenced by a number of gods living on Mount Olympus, the ancient Greeks did not believe in fairies, per se.

It was quite common for Shakespeare to take an ancient or exotic setting and/or source material for one of his plays and then simply create characters and situations that were drawn completely from his Elizabethan world.  Shakespeare was not interested in creating historically accurate characters or locations, but rather holding the mirror up to his audience, so that they might see themselves reflected in the behaviour of the characters they watched onstage.

So, Oberon is not an Athenian aristocrat, he's a Fairy.  He may indeed be royalty (He is the King.), but he's not Athenian in any way.   For that matter, one would be hard pressed to find much beyond the names of the actual aristocrats in this play -- Theseus and Hippolyta -- that bears any significant relationship to ancient Greek/Athenian behaviours.  They hunt and have a wedding feast with a play for entertainment -- common past-times for upper class Elizabethan England.

Shakespeare creates the characters in Midsummer (including Oberon) as he does for all of his plays, from his experience of life as he knows it.