Fear to TreadJames SwallowThe Horus Heresy, book 21

Characters in Fear to Tread

4 characters, main characters first.

Main characters

Sanguinius
Also in Pharos, Sons of the Emperor

Antagonists

Ka'Bandha

Supporting characters

Horus Lupercal
Also in Horus Rising, Galaxy in Flames, Vengeful Spirit, Sons of the Emperor
Sanguinus