D&D 5E Noncombat Encounter - Underdark

Noncombat Encounters include creature groups, hazards and lone npcs. Maybe a lost lizardfolk, a forest fire or a talkative druid
The Underdark is a place of twisting tunnels, constant darkness and strange magic. Encounters might occur in a forest of fungi, amid giant stalactites or by the side of a gaping chasm. It is a place of elemental earth and gates to far realms. Home to fungi creatures, the dark elves and aberrations from the Far Realms.

terrain: sources:

Gaesla Stargaze is a drunk female gnome guard who smells of sulphur. She loathes other people and has been talking about an artifact for the last few weeks
At a forest of pulsating long-stalked blue-capped mushrooms and a pillar of glittering volcanic glass (nearby is an uncovered pit of acid)
They are searching the area for a companion
Possibly... they have a Wand of Web

Merihim is an independent orc bandit with expensive clothes. They believe the past should be left behind and are currently playing a board game
At a rune-covered limestone slab near a decorated statue (there is a weak air current)
They are curious about a nearby light source

Timon is a repulsive dragonborn noble with bright eyes. He loves to mimic others and is currently walking quickly
At a patch of mottled edible puffball mushrooms near a stone monument (close by is a large rock)
They are digging a tunnel

Eloxochitl is an upset human archmage with several rings. They have strong beliefs around might and seek to restore buried military fortifications
At a moss-covered cliff (it is cursed ground)
They are marked by a deity of earth
Possibly... they have a Cloak of Arachnida

noncombat

1 Githzerai Monk (Monster Manual p.161)

Runedip the Sorrowful is a nosy githzerai monk with an old beetle companion. They are always making something and have a powerful enemy
At a snow-capped cliff (by a dangerous ravine)
They are lost
Possibly... they have an Ioun Stone of Reserve

They try to make friends with you
At a crystal rock surrounded by mushrooms (weird lights can be seen in the distance)
They are bearing symbols of a deity of darkness
Possibly... they have a pair of Dimensional Shackles

Tithian the Pincher is a compassionate male human cult fanatic with large eyes. He has several small pets and is currently showing off a pet poisonous snake
At a patch of green moss surrounded by rubble (there is a cloud of smoke)
They are blocking up a tunnel

Reimrad Bargith is a jovial half-elf veteran with a bright red scarf. He is rude to others and is hunting down a murderer
At a cave with large stalagmites and stalactites and a fish-filled pond (there is a strong stench in the air)
They are larger than normal (extra health)

Pallabar Krent is an artistic female centaur druid holding a rusty pick. She likes conversations on wrestling and is currently tugging a beard
At a fungi-covered cliff and a beast pen holding giant lizards (there is an unexpected breeze)
They are are exploring the area
Possibly... they have mason's tools

Faceripper is a dutiful female wereboar holding a set of pan pipes. She is always whistling elven tunes and is currently practising for a contest
At a patch of mushrooms (there is a foul stench covering the area)
They are studying a portal