What silhouette do the playable species and droids count as — 0, 1, or something else? The move power mentions silhouette but I couldn't find an explanation there.
In Chapter 6 of Edge of the Empire, on page 212 there is Table 6-6 which offers a quick comparison of character types with silhouettes.
Humanoid species/droids are typically classed as Silhouette 1, while anything smaller is Silhouette 0.
Chapter 7 has a similar chart for looking at the increasing sizes of ship types.