Hahaha, I'm having some great fun with my m8s and I never expected to. One of my friends is honestly a terrible fucking DM. The problem is, he sets up great scenarios, great characters, great roleplay - then swings unavoidable fights against creatures with 10,000 HP that takes 3 bloody hours to resolve. We call this the Mugabe problem, because he induces hyperinflation with all of our numbers. He gives a player a weapon that does 1d40 damage, he then gives the enemies 1d40 hit dice to compensate, in an incestuous arms race. We talked about this and he made it clear he would never change his ways, so I decided to just leave; still continuing to play with him as a player, but never as a DM. After a year and a half he comes back to me over a lunch like a scorned ex lover and very sincerely states that it's just not the same without me. I decided I could come back to his campaign, but not as a player, but as NPCs for the party. I've played scoundrels and rogues, rich merchants who caused hyperinflation in the economy to complete the Mugabe motif, enemy bosses and so on.
One of my favourites was someone who seemed so obviously, incredibly evil and witchlike - and indeed, they were a witch, but they never cast a spell and they never did anything evil. They were just sinister, but altruistic. Red eyes in the darkness watching over the city, making sure everyone is safe. Misunderstood they were! Carbuncle the witch. In this setting magic is supposed to be rare (despite its abundance in game), so I had very much fun RP'ing Carbuncle's magic such as... Conjuring a rabbit from a hat. Making a coin appear from behind an ear. Turning a stick into a boquet of flowers. Despite her ability to cast great spells, Carbuncle managed to go through the entire campaign never casting a spell, but is now being hunted by witches convinced she is a powerful mage because the actual spellcasters in the party destroyed hell and the blame is unfairly falling upon her. Life is unfair like that.
A new favourite of the party is someone called Robin. Whereas Carbuncle oozed sinister and fell intent, but was actually a moral saint guiding the party towards a brighter path, Robin is disarming and charming - a one armed child who speaks like a Blue's Clues or Balamory character. "Hello! Will you be my friend?" ..."I don't think we should do that, that would be very naughty." ..."Life is a cage and death is an adventure. Let's go on an adventure friends! :D"
Despite that, he is very clearly a powerful necromancer taking orders from his soul jar'd ancestor to resurrect hell and cause chaos/pandemonium/war/strife amongst the mortal world. I worked with the DM together to make this monstrosity a lvl30 wizard, and it was only after I started reviewing epic spells and 10th lvl+ spells that I realised just how this character was much less an NPC and more a plot point with a personality.
When I designed them I made sure they'd have 30 HP so even with all of their epic boons and other bullshit, it would be a trivial matter for the party to kill this evil necromancer child. Unexpectedly, the party's paladin has taken an incredible liking to them. Whilst the bard is an "end justifies the means" sort of person - they destroyed the entire afterlife to take hell's demons down with it, unfortunately also eliminating all souls - good, evil and in between, the paladin has been struggling to stay on a moral path. For every good action they take they've made three panicked immoral decisions to try and cover up their mounting list of crimes. The bard has been trying to correct this for a while, and had some help when we had a new player playing some werewolf rogue who had a nice little storyline about standing up to authority for what's right and for yourself despite not living up to familial expectations - really swell stuff.
But the moment this evil child shows up, with very little persuasion the paladin has gone full deathknight. There was a hilarious encounter where !not!Robin Hood and his merry men attacked us because a party of a necromancer, werewolf, diabolically augmented paladin with a normal bard looked like an evil cult holding the bard hostage. Whilst the party tried to explain the miscommunication, the paladin launched an assault. In character I took cover in a grave to resume collecting bodies for a meat colossus project, out of character I legit had to ask my friend "are you seriously going to attack the merry men?"
I did not expect him to align his morals immediately with this child of armageddon!!! xD
We managed to end the fight peaceably enough with only one death, but dear Lord. Right now the DM and I are mulling over whether to use a 10th lvl bullshit soulblight spell that causes a zombie cascade. We figured it would fit in right at home with all the other plotlines going on in the background - there is a hyperdimensional witch cold war. A plot to assassinate the god emperor of the humans. A druidic plot to annihilate the new technologies (which are actually ancient technologies). The entire world is a time traveling giant seamine. The blacksun deathcrawl entity.
It's like he took every horrible idea we could come up with and kept smashing them together until they had a negative integer overflow and became fun again