The Traveler

The Traveler is a trickster deity worshiped by Jester. As an NPC, the Traveler is portrayed by Matthew Mercer.

He seems to find enjoyment in mischief and pranks. When Jester rearranged all the books in a bookstore, she felt a sense of approval from her deity.

Jester keeps a sketchbook that she appears to use as a means of communicating her experiences to the Traveler, and as a way of worship.

Jester's holy symbol for the Traveler is a door arch and path.

Appearance
When the Traveler appeared to Jester in her room at the Pillow Trove in Zadash, he was hooded in a cloak of deep green. She saw verdant irises in the dark space of his hood.

Jester confided in the Traveler when she didn't receive a package from her mother at the Pillow Trove. He manifested and reassured her, explaining that Jester's mother was unaware of her location at that moment.

After Jester had successfully defaced and made her getaway from the Hearth of the Allhammer in Zadash, he made his presence known by taking a bite out of the caramel apple she had been eating.

Located among the many religious artifacts found in the Merrow lair, Jester finds two different iterations of the Traveler symbol. Despite having zero knowledge of anyone else worshiping or acknowledging the Traveler, Jester excitedly goes around to show everyone her find.

Trivia

 * The Traveler that Jester worships is not the same as the one in the Eberron setting of Dungeons & Dragons, as Matthew Mercer confirmed that they only share the same name. He also said that the Traveler may not necessarily be a god.
 * In the Dwendalian Empire, "worship outside the approved idolatry is met with imprisonment". The Traveler isn't one of the six approved deities and worshiping him is illegal, though most citizens of the Dwendalian Empire seem unaware of his existence.