Eike

You walk into the room where a lone figure stands in a pond on the far side. The water comes up to their ankles. They wear a hood, and when they turn to meet you, you see it covers their face. "You should have listened to my instructions," Eike says. In their hand, a scroll is glowing, and they drop it into the water. You see something begin to rise behind them.

Appearance
When confronted as to who they really were, Eike attempted to pass themself off as a male human, but was not believed by the party.

In their true form, without the use of any shape-shifting, they have a purple-blue main tint to their semi-translucent skin, with yellow and green sheens and patterns on the upper layer of skin. Their eyes are golden and they lack a nose. Their teeth are quite sharp, suggesting a carnivorous ancestry.

Personality
Due to their disguised nature around the party, Eike's true personality around friends is unknown. To Astrid, they appeared generous and secretive; to Hail Merry, a bit flirty; and to Sir Harrard, like a good friend. Upon the party's refusal to give them the Aadhar they wanted, the doppelganger became violent and summoned a gas spore to attack them, as well as poison them and lob magical attacks.

When confronted with death, they attempted to flee, not holding the acquisition of the orb over their life.

Campaign Arc One
Eike hired four adventurers to attack Hulligan Pebblehopper and retrieve an item they claimed he stole from them. They appeared in a different persona to each person:

Astrid
You were asked by a young halfling called Eike to retrieve an item that was stolen from them. "I heard from folks in Cathaire," they said to you in a tavern, "that you were the kind of person that could get this job done." In the swamplands south of Doireis, among the many other dangers, there is an orc that takes treasures from     unsuspecting travelers as a price for their safe travels through the bog. Eike lost an item they were meant to deliver, taken by this orc. The item is said to be a sphere with intricate designs around it. It may be easy to steal the item back, but killing the orc may be best for everyone. Eike said they would find other adventurers to meet you in among the trees, as it is far too dangerous to wander completely alone. For your troubles, they would pay you 50 GP upon completion. You will leave the item on the threshold of a safe-house in the swamp, near to the Cearrthan Mountains. Your money would be in a box by the door, with your name on it.

Hail Merry
You were asked by a colorful tiefling named Eike to retrieve an item that was stolen from them. In the     swamplands south of Doireis, among the many other dangers, there is an orc that takes treasures from unsuspecting travelers as a price for their safe travels through the bog. Eike lost an expensive art piece to this     orc, and they would very much like to have it back. The item is said to be a sphere with intricate designs around it. Eike said they would find other adventurers to meet you in among the trees, as it is far too dangerous to wander completely alone. For your troubles, they would pay you 50 GP. "I will not be at home when you arrive, as I have family matters to attend to," they told you with a wink, "but you are free to come visit again another time." The money you were promised would be in a box by the door, labeled with your name.

Sir Harrard
You know Eike to be a shape-shifter. You met them days ago on the road. You came together as friends; they learned of Harrard's quest for knowledge and acceptance, and you learned they needed assistance with     getting an item that was taken from them. "Come south with me, do this thing for me," they said, "and then I will help you with everything you need." The job would need more than just you, so Eike asked that you keep the adventurers they hire on the right path. Most of them will have seen Eike with a different face, and you must keep     suspicions down. Take the item to their house in the swamp and lead the other adventurers back to Doireis. "I'll be forever in your debt."