Pip
Pip is Dogtanian's sidekick for the second half of the series. Pip spends most of his time giving Dogtanian advice (mostly to think with hs head rather than his sword) and complaining about a lack of food. He did help Dogtanian win the Musketeer trials. I think* Pip was added for a bit of slapstick, and to get in a pun as his surname's Squeak (full name Pippin Aloysius Squeak III).
*I haven't read the novel so there might be a Pip character in there.
