Lightning flashes again, as Boko's call lightning spell activates again, targeting the monkey on the roof for 19 lightning damage on a failed DC17 Dex save.

She moves around Gerrard and Qivys to hold her jaws and claws above the northernmost sleeping monkey. She readies an attack should anyone else attack it, or if it wakes up, or anything that would make her think the monkey is a threat. 

Readied Bite Attack: 21 Damage: 11 plus 5 force from eldritch maul tattoo (also, if this is advantage, here's a second roll: 17 
Readied Claw Attack: 15 Damage: 8 plus 6 force from eldritch maul tattoo (also, if this is advantage, here's a second roll: 14 

Crack! Another bolt of lightning strikes the slime-covered rooftop. The simian demon shrieks and leaps. DC17 DEX Save: 6

Bokobear prepares to tear apart anything that tries to awaken or attack.

The baboon thing is more enraged than hurt by the bolt of electricity.

Peri, watching with Thwack from the shadows, may act next.

Thwack 

Now with a full view of the battle Thwack whispers to Peri "They always making trouble eh? Look like is OK. I going sneak closer to keys." He creeps towards the pink haired man in the crowd.

Stealth 20

((If the roll is under 15 here's a Psi roll to potentially help 8))

Thwack is able to get quite close to the pink-haired man in the crowd without his noticing. Everyone's eyes are alternating between the shrieking baboon demon on the roof, and the massive polar bear in the street, and the bear's companions.

Peri may act, as may Gerrard.

Gerrard:

Dropping his weapons point-first into the ground, they quiver on either side of the magical fan at his feet as well.  Smoothly drawing his bow, the young noble sends a pair of shafts at the baboon on the nearby rooftop!

Longbow:  Attack: 27 Damage: 8

Longbow:  Attack: 25 Damage: 11

Distracting Strike:  If one of the shots hits, Gerrard will expend a Superiority Die and do extra damage plus give the next attacker advantage on their attack against the target:  3

Peri:

Peri recalls how quickly the pink-haired Kei was able to slip away from them before. He quietly mutters a fae curse to stymie his target's Dexterity and creeps closer, using the crowd as cover, trying to get a look at their face. He would like to confirm whether or not this is in fact Kei before starting any more trouble for their group. As he gets closer, he speaks so that only Boko is able to hear his words: "I think I see Kei. He's in the crowd south of you. I'm right beside him."

((BA: [spell]Hex[/spell targeting Pinko's DEX; movement + action to sneak up beside Pinko so he can get a look at their face.))

Both arrows hit their mark. The simian beast, badly injured, turns and hops to the top of the roofline. It scampers southwest along the peak of the roof before making a bold leap from its end. (Athletics: 14). You don't see the result, but you presume it is now on the harbor side of the building, where Peri and Thwack had gone.

Peri gets a look at the pink-haired man. He looks identical to Kei, albeit with thick white makeup, pink hair, and garish clothing. Peri Stealth: 16

Combat is paused. Two baboon things continue to slumber. The wounded rooftop beast is nowhere to be seen. Kei's doppelganger is utterly unaware of Peri.

Everyone may act.

Gerrard:

The young noble puts away his bow and picks up his fan and stows it.  He then picks up his blades and sheathes them.  Now that his possessions are secured, he pulls out his rope and starts to tie up the sleeping creatures.

Bokobear moves so that everyone can gather around one of the sleeping monkey demons and makes questioning biting gestures at it, then looking at the rest of the group, and then pauses.

The two monkey-things are securely tied; their arcane sleep is soon to expire. The immediate danger apparently passed, the locals (including the Kei-lookalike) crowd closer to get a better look. The vapors have mostly cleared from the streets. The door to the building is open, showing a blackened staircase down and rooms to either side. All is silent within. The escaped creature does not reappear.

Qivys will help secure the "monkey things" that are sleeping.
he steps back and scratches his beard.
"Not sure what that was all about but it ain't out of the ordinary fer us, it seems." he says. 

Gerrard:

"It's too quiet in there," says Gerrard, asking,  "What of the guards that rushed in?"  He gets the sinking feeling that the feral primates they just fought might actually have been the transformed militia, but before that thought can take hold, he volunteers, "I'll check inside to see how they fare."

Unless Qivys or Boko suggest he wait, Gerrard will move into the building and look for the missing guardsmen.

Can Bokobear fit inside the doorway?

Shaking his head, Qivys follows. 

Thwack 

Still a distance from Peri and pseudo-Kei, Thwack begins to whisper towards Peri. The tiny reptilians voice echoes through the halflings mind "You gonna grab him? You want me to make diffusion here so he don't see you comin'?" While he waits for an answer he moves to within 15ft, trying to keep a low profile by keeping some onlooker between himself and their target.

A - establish Psi Whispers link with Peri

M - move to behind the onlooker just south of the lookalike Kei

Stealth roll if needed 17

Peri and Thwack edge quite close to Pink Kei in the crowd without gaining his attention, which is still fixed on the spectacle in the street.

Gerrard: Make two Intelligence (Sleight of Hand) checks to establish your knot-tying. You may have advantage on both thanks to Qivys' help.

Gerrard and Qivys head into the building and down the stairs. Bokobear, judging the staircase barely wide enough for her burly bear form, follows.

On either side, at the top of the stairs, they can see dingy windowless rooms filled with heavily-stained alchemical equipment, burners, pipes, cooking tripods, and bottles of all sizes, shapes, and colors. They are not currently occupied, nor does the equipment seem to be obviously in use. Downstairs, through an open door off a wet stone landing, they find a horror scene – human bodies torn to shreds. Blood is everywhere, broken glass, wax, yellow foam, and debris. It's clear that the whole militia patrol that descended met their doom here nearly instantly. But there are additional bodies here - other humans. The walls, floor, and ceiling of this large cellar are covered with carvings of complex spirals and smeared with blood. There is a toxic chemical tang in the air, and part of the room is flooded with liquid.

Gerrard:

Sleight of Hand w/Advantage:  24

Sleight of Hand w/Advantage:  21

"Ugh," recoils Gerrard from the scene before him, repulsed at the gore but relieved that the primates he had just slaughtered were not the transformed guardsmen.

Peri:

Peri returns Thwack's pychic whisper: "I don't know if we can just grab him. I was kind of hopin' we could get him alone somewhere. I'm gonna try talkin' first."

He then moves to stand beside Maybe-Kei and says, while crossing his arms and looking toward the doorway into which the others have vanished, "Whaddya say, Kei, you wanna go in and see what they found?" He readies an action to attempt to grapple the man if he tries to run away.