[quote=@FrozenEcstasy]
You could be extra badass and have the parasite protect its host with some sort of combatant abilities.
[/quote]

I was thinking that it might generally be good for making the Cook rather tough, rather than particularly "fighty"; the Cook's fighting style should probably be a sort of vaguely aggressive flopping on people in the hope of crushing them.

[quote=@FrozenEcstasy]
But... robots don't have stomachs...
[/quote]

It's quite alright, if there's a mouth part that you can shove things into, that's close enough, right?