Sleuthnoir

Sleuthnoir is the ship between Sleuth and Noir.

Canon
Sleuth and Noir are both part of the Hardboiled set.

In both of their coat pockets, they have wanted posters for each other.

Fanon
Typically, Sleuth and Noir are portrayed as opposites. Sleuth is lean and shorter compared to Noir, while also being more timid and uncertain. Noir is buff and taller compared to Sleuth, while being more bold and assertive.