He is described by Ashby as being a little big for his boots, and as having a tendency to ramble on. His accent is apparently a mishmash of various powerful species' - he apparently rolls his Rs like a Harmagian would. Ashby, at least, still seems to detect his martian undertones.
In the first book, Yoshi tips Ashby off about the Tunnel Boring job from Tokath Gateway to Hedra Ka, thus putting in motion the main driver of the first book's plot.
It is possible that Yoshi is named after the cute green reptile from the Mario series of games.
is likely that Yoshi was named by the authI