Nice couple:
Lysander: Lucky Loveable Lysander
Hermia: Hermia: nice girl, means no HARM. Also, Hermia is the special girl whom everyone loves at the start That's because Hermia is a special-er name than Helen
Messed up couple:
Demetrius: Dumb Demetrius the Dolt
Helen: Boring name, so boring girl that nobody likes. Her real name is Helena, but that's confusing so I changed it to Helen everyone at the Darkwinner site. Learn Helen, and then when you see someone say "Helena" it's easier to substitute in the easier name to keep them straight.
Puck: Mischievous Puck likes to Puck things up (substitute 'F' for 'P')
Oberon: Oh! the king has a lot of brawn!
Titania: The queen's short name is "Tits" Or it sucks to be her (falling in love with an Ass-head) just like it sucks to be the "Titanic"
Nick Bottom: Do you really need a mnemonic for this one?
Peter Quince: Peter was the leader of the disciples. He can count to 5 so he's the smartest/leader
Francis Flute: Hi pitched flute, hi pitched voice, hi pitched girl/transvestite
Tom Snout: I broke my nose running into a wall. Funny looking nose=funny looking wall
Snug: The lion is snug in his cage because the lion is big. Only idiots are "smug" (can't remember lines)
Robin Starveling: He robs because he's starving. He's starving because he's drunk (moonshine)
Duke Theseus
Queen Hippolyta
Philostrate: He loves the state. (Public servant)
Egeus: He's no genius, he can't figure out what's best for his daughter (Not really royalty, but more power than the four lovers, so I put him here. Also, he only appears when the upper class does, so there.)