This is Fabian Edwards. He’s not usually a dog, some of the time he looks like a human. He’s a shape-shifter made of nanobots; the cheek marks, hair and tail stay no matter what form he takes. (I think it was programmed in so he wouldn’t be able to hide easily. Also, standard shapeshifter rules.) He identifies as male, but can take any form.
He -can- take some forms almost perfectly, but others he hasn’t had much practise with end up as a weird, shiny black approximation. He sometimes keeps the oily texture to make people feel uncomfortable.
Designed to infiltrate, befriend and ultimately (and unknowingly) turn people against each other- I think the black dog form is quite suiting for him. He’s somewhat of an ill omen and has a unpredictable “trickster deity” type personality.