Adult Pink Dragon

A Pink Dragon is very narcissistic and loves compliments and attention, is petty and tries to avoid taking damage so that it shall not ruin their beautiful scales.

They will however take their revenge if either them or their followers, who are their main source of adoration, are hurt. 
However, they will avoid fighting to the death unless cornered or otherwise incetivised with a big gain. 

They are also easily offended, which was the end of many an adventurer.

A Pink Dragon’s Lair

Pink dragons lair in beautiful places. They favour terrain and environments which accentuate their colour. Pink dragons love pedestals and mirrors in their lairs, sitting upon the former to admire themselves in the latter .

A legendary pink dragon’s innate magic deepens the charm of the area and creatures around its lair. 

A pink dragon rests on high pedestals in its lair, the floor around it a morass of broken glass and mirrors, pools, and warm water flowing through. As foes struggle to move toward it, the dragon gazes from it's perch towards it's own image and charms and controls the intruders with their charming breath.

Pink Dragons pride themselves on their collection of creatures that they  have charmed. They make no distinction between those that they keep in their lair be it trolls, goblins, humans, orcs, halflings or even other dragons.
If these creatures do not submit themselves willingly, the Pink Dragon will most make them puppets controlled by magic that they keep in their lair.

Lair Actions

On initiative count 20 (losing initiative ties), the dragon takes a lair action to cause one of the following effects; the dragon can’t use the same effect two rounds in a row:

• Boiling fog fills a 20-foot-radius sphere centered on a point the dragon can see within 120 feet of it. The fog spreads around corners, and its area is heavily obscured. Each creature in the fog when it appears must make a DC 10 Constitution saving throw, taking 10 (3d6) fire damage on a failed save, or half as much damage on a successful one. A creature that ends its turn in the fog takes 10 (3d6) fire damage. A wind of at least 20 miles per hour disperses the fog. The fog otherwise lasts until the dragon uses this lair action again or until the dragon dies.
• Jagged mirror shards fall from the ceiling, striking up to three creatures underneath that the dragon can see within 120 feet of it. The dragon makes one ranged attack roll (+7 to hit) against each target. On a hit, the target takes 10 (3d6) piercing damage.
• A Group of charmed creatures that the dragon can see within 120 feet of it surge outward in a grasping tide. Any creature on the ground within 20 feet of such a group must succeed on a DC 15 Strength saving throw or be pulled up to 20 feet into a nearby pool and knocked prone.

Regional Effects

The region containing a legendary pink dragon’s lair is warped by the dragon’s magic, which creates one or more of the following effects:

• Warm fog lightly obscures the land within 6 miles of the dragon’s lair.
• Mirrored walls block off areas in the dragon’s lair. Each wall is 6 inches thick, and a 10-foot section has AC 5, 15 hit points.
  Any time the mirror is targeted by a Magic Missile spell, a line spell, or a spell that requires a ranged Attack roll, roll a d6. On a 1 to 5, the mirror is unaffected. On a 6, the mirror is unaffected, and the effect is reflected back at the caster, turning the caster into the target.
  If the dragon wishes to move through a mirror, it can do so without slowing down. The portion of the mirror the dragon moves through is destroyed, however.

If the dragon dies, the fog fades within 1 day. The mirror walls shatter over the course of 1d10 days.