Samliel

 is Reani's angelic guide. As an NPC, is played by Matthew Mercer.

Appearance
An angelic entity, Samliel has feathered wings and appears in a translucent, crystal and ethereal form.

Samliel appeared to Reani in a dream vision after she helped the Mighty Nein on their quest to find a White Dragon.

Reani
Samliel is Reani's moral compass, giving her occasional visions of places to go and telling her what's right and what's wrong. Reani considers Samliel as a friend.

Quotations

 * (to Reani) “I just want you to know that I trust that the guidance I've given you to this point is strong enough to lead you whether or not I'm around. If you see injustice, if you see evil, if you see the darkness that creeps into the light, and I'm not there, do not hesitate."