Boris Mikhailovich Rusakov was a Muscovite scientist in Lyra's world. A lot of his life is unknown, but it is certain that he was a main contributor in the discovery of Dust, also known as Rusakov Particles in his honour.
Rusakov also gave his name to the Rusakov field which is tied with Dust.
- Northern Lights (Mentioned only)
- La Belle Sauvage (Mentioned only)
- The Secret Commonwealth (Mentioned only)